1. Extended Share (75,616 users) - http://goo.gl/mijZv
Extends Google+ to share to Facebook, LinkedIn, Twitter, and many more.

2. +Photo Zoom (60,487 users) - http://goo.gl/rHIEP
Easily zoom photos and profile pics from your Google Plus Stream.

3. Facebook Friend Exporter (51,651 users) - http://goo.gl/MFNy3
Get your data contact out of Facebook to Google Contacts or CSV, whether they want you to or not.

4. Scroll To Top Button (41,868 users) - http://goo.gl/1KFqm
Adds a scroll to top or bottom button.

5. Replies and more for G+ (39,957 users) - http://goo.gl/Zv8WJ
Adds reply and reply-to-author buttons to Google+ comments and a number of other enhancements.

6. Surplus (37,774 users) - http://goo.gl/vRlPE
Google Plus Integration for Chrome

7. G+me (35,532 users) - http://goo.gl/JgR2Z
Collapses the Google+ stream while keeping live updates: collapses posts, hides comments, etc.

8. Google Translate for G+ (26,898 users) - http://goo.gl/PjSrQ
Translate your Google+ stream using integrated, inline, Google Translate support.

9. Usability Boost for G+ (26,301 users) - http://goo.gl/CLnUG
Greatly improves readability on Google Plus, ability to star posts to read later and some other useful features

10. Google+ Ultimate (16,759 users) - http://goo.gl/Q6xd3
This extension for Google Plus adds functionatility and themeing for the site.

11. Google Plus Directory (13,618 users) - http://goo.gl/iAdXC
Find your G+ is a Google Plus person directory, where you can meet new people, start making new friend circles and more for Google+

12. -1 Minus One for G+ (12,274 users) - http://goo.gl/WYuf6
Minus one (-1) button in Google+ (Post & Comment), Notifications.

13. More for Google Plus (7,996 users) - http://goo.gl/JzwVL
Loads more content as you reach the bottom of the Google+ page.

14. Google+ Tweaks (7,601 users) - http://goo.gl/x00Pw
Tweaks to the layout and features of Google+ (Google “Plus”) Full width, thumbnails only, etc.

15. Notification Count for G+ (7,487 users) - http://goo.gl/Zml0f
Extension for displaying unread notification count for Google Plus

16. Helper for Google+ (7,136 users) - http://goo.gl/lNbSX
Add extra functions the Google+. Get desktop notifications on new posts. Share Posts via twitter. Translate posts with Google Translate. Bookmark posts faster for reading later (also to delicious.com). Linked #hashtags. Search in posts and profiles directly from your omnibox.

17. G+ Count in Title (5,411 users) - http://goo.gl/dANji
Adds notification count to the document title in the page tab.

18. +1 Button (5,256 users) - http://goo.gl/h67bs
Plus one every page you like with only one click, directly from omnibox, without any annoying popup

19. Uncircle+ (5,022 users) - http://goo.gl/VqDLu
Google+: Find and Remove Inactive People in Selected/All Circles. Inactivity = No Public/Private Posts At All or Since a Chosen Date

20. +Everything (4,590 users) - http://goo.gl/0lYlx
Adds the Google+ bar to all websites.

21. Auto-Colorizer for G+ (4,220 users) - http://goo.gl/kRbLi
Colorizes Google+ and Facebook based on the user’s photo.

22. Google Plus Friend Finder (2,803 users) - http://goo.gl/rTcEZ
Google Plus Friend Finder it’s a web application wich helps you to find your friends by city, country, occupation and even more.

23. G+ Stream Pause (2,600 users) - http://goo.gl/tKSFC Allow’s you to pause your Google+ stream so you can take your time reading or watching videos posted

24. Golden View for Google+ (1,275 users) - http://goo.gl/scoaD
Google Plus enhancements: (optional) modules: User Mute, Default Circle, Hide Images, Hide comments, & Search w/ Google.

25. Hangout Auto Try Again for G+ (1,066 users) - http://goo.gl/sQkAx
Tired of clicking the try again button for Hangouts? Then install this.

When viewing a Google+ photo in the lightbox photo viewer, click Actions. If the photo owner has allowed downloads, you will now see an option to Download Photo.

If you don’t want viewers to download your photos, click the gear icon on the top right corner of this screen, go to Google+ Settings
(https://plus.google.com/settings/plus) and uncheck the Allow viewers to download my photos checkbox.

Starting today you can actually share your favorite circles with others! So if you’ve got a great Photographers or Celebrities circle, for instance, then you can share a copy with your friends.

To get started, just click on a circle from your Circles page, and click Share.

(Importantly: when you share a circle, you’re only sharing its members at that time. Also: the circle name is always private to you, and any changes you make afterwards are private as well.)

Video Transcript

Hi, my name’s Owen, and I’m an engineer on the Google+ team.

One of my favorite parts about circles is how they help me control who I share with, as well as what I read. In fact, many of you have created lots of great circles around topics that interest you (like Photographers) to bring lots of great content to your stream. In these cases, we’ve heard that you actually want to share your circles with others. Both to save your friends some time, and to connect them with interesting people and content.

Today I’m happy to announce that we’re launching exactly that feature. We let you take the circles you’ve created, and share them with others! Let me show you how it works.

From your circles page… select the circle you want, add a comment, and then share it.

When your friends receive your circle, they can then pick and choose who to add to their own circles.

Note that when you share a circle, you’re only sharing its members at that time. The circle name is always private to you, and any changes you make to your circle afterwards are private as well.

We hope this new feature helps you share and find lots of great content in Google+, while still giving you important controls over how you read and share. Thanks for listening, and please keep sending feedback!

Linkedln hit 50 million users in 2354 days;Facebook hit 50 million users in 1325 day;Twitter hit 50 million users in 1096 day;Myspace hit 50 million users in 1046 days.

We all know that this fast growth rate may related with the few recent updates of Google+: Google+ is open for register;Google+ API released;Google+ Search System released;also include the new Google+ Android App.But we believed this just the beginning of G+’s fast growth,cause all the new features need time to digest.It wouldn’t suprise me if Google+ hit 100 million users by the end of this year.

Uncircle+ is a google chrome extension that lets you easily uncircle (that is, remove) inactive people from your Google+ circles so that you can add more people to your circles later without reaching the 5000 limit.

Inactive people are those people in your circles who have not shared any posts (original, reshare, private or public posts) with you. Having at least 1 such post is a sign of activity.

Uncircle+ behind the scene:
Step 1: it collects a listing of people you’ve added to your circles.
Step 2: it checks the activity of these people.
Step 3: it shows you inactive people and lets you select which ones to remove.
Step 4: it removes selected inactive people.

Why do you need it?
Google+ lets you add a maximum of 5000 people to your circles. Nevertheless, not all of the people in your circles are active; They just count towards your quota.

What does Uncircle+ do?
Uncircle+ is a google chrome extension that lets you easily uncircle (that is, remove) inactive people from your Google+ circles so that you can add more people to your circles later without reaching the 5000 limit.

Who are inactive people?
Inactive people are those people in your circles who have not shared any posts (original, reshare, private or public posts) with you. Having at least 1 such post is a sign of activity.

Fill out your profile!
(I added this right up at the top after some very clever commenters pointed out that I missed this one. I love being able to edit my posts on G+, by the way. Probably my favorite technical feature. Really.)

Who are you? Share as much or as little on your profile as you’re comfortable sharing (the privacy controls are excellent), but please don’t leave it blank! We want to know what you’re about. Telling us what you like to post about is a good start, but you’re free to make your profile into anything you want it to be. Tell us your favorite books or tell us your occupation. Whatever you want to share. Just share something!

Set up your Circles for reading and for sharing.
You know how Google starts you off with Acquaintances and Following and Friends and Family, etc? All of those are Streams just as much as they are Circles to share with. When you post things to the Family Circle, only the people in that Circle see the post. Great! Makes sense. But did you know that when you click “Family” in your Stream list, only posts from people in your Family Circle show up? Circles = Streams. Lightbulb!

This will make more sense as you get more familiar with the platform, but if you start thinking of your Circles as reading tools and not just sharing tools from the beginning, you will have a much easier time managing the flow of content you read. Make big and little Circles for reading if you want to try to categorize them. I have a free-for-all Main Stream and then lots of categories for more focused reading. Yes, it’s work, but it’s worth it.

Find awesome people and interact with their posts.
Add +Natalie Villalobos and +Tom Anderson to your Circles. Put them in your Main Stream. These two Plussers are truly interested in the community on the network, but it’s not just the content they contribute that makes them great. It’s about the conversations happening on their posts and their level of personal engagement with those conversations.

G+ isn’t just about broadcasting or just about private networking. It’s about interactivity and engagement, whether that’s done in public or in private Circles. Public conversations here are amazing, and private sharing is kept relevant by the use of Circles.

There are a lot of amazing people to follow on G+, but Natalie and Tom are great hubs from which you can explore anything in the community that interests you, whether you’re into geeky stuff (Tom’s G+ posts led me to +Mike Elgan, who is one of my favorite tech writers now) or whether you’re a foodie like +Alida Brandenburg, who I found through Natalie.

Use comment threads to direct your exploratory efforts!
The Google Plus Search feature is amazing for new users and I think a lot of us wish we’d had that about 90 days or so ago, but it’s not your only source for finding interesting people. Comment threads on highly active profiles like the ones I mentioned above are a fantastic source for great new people to follow.

When you go to a Tom Anderson post looking to get in on the discussion, you might want to tear out your eyes because within minutes there are hundreds of notes from hundreds of people. But stick with it anyway. Skim. See a funny comment or something really thoughtful that catches your attention? Why don’t you add that person to a “Potentially Interesting” Circle? When you’re bored and looking for new content, that Circle will be unpredictable and … well, you know. Potentially interesting. When you read something you like in there, add that person to your Main Stream. When you read enough stuff you think is lame from one person, take ‘em out of your Circles. It’s your show. Tailor it to your own interests!

If people you don’t know Circle you, don’t freak out!
Consider this a new source of “Potentially Interesting” people. You don’t have to Circle anyone back, and you can read all of the posts they share with you in your Incoming Stream. Same principle as before: if they entertain or interest you, add ‘em! If not, Google has ignore and block features.

If nobody Circles you, don’t freak out!
And don’t start spam-sharing your posts with people to beg for attention, either. It’s kind of obnoxious.

When people Circle you, it means they are either interested in what you are saying publicly on your own Stream, or they are interested in what you might have to say in the future based on a comment you made or something in your profile. You are not obligated to entertain anyone on G+, but if you want followers for some reason, work for their attention in an authentic way. Interact with others, give your time to others, and others will want to return that sentiment to you. If you don’t ever broadcast a single thing via your Stream but you comment thoughtfully on other people’s posts, you are still the backbone of this community and your “Follower count” is irrelevant. I promise.

You don’t have to post publicly, but if you do, try not to feed any trolls.
Don’t waste your time with people who drive you nuts — there are tons of awesome people waiting to interact with you elsewhere. Your public posts are your territory and you’re free to set your own rules for how people behave in your comment threads. Don’t tolerate anything you don’t want to tolerate.

If G+ starts feeling like too much work, go outside.
We often get out what we put in, don’t we? If managing your Circles seems too hard, consider simplifying them. If reading your Streams starts to feel like it’s frying your brain, go get some Vitamin D in the great outdoors (but please wear sunscreen). When you come back, you might suddenly have a super awesome idea for a great public post (Tom Anderson once came back from floating in the ocean to tell us all about an epiphany he had…while floating in the ocean). Or you might have something particularly insightful to add to someone else’s post. Or you might realize your Circles are set up in a way that’s totally ridiculous and you’ll find a system you like and everything will be epic from now on. Who knows? Taking a break and unplugging is really important, whether you feel legitimately overwhelmed or just a little frazzled from information overload.

Own your experience.
This is your network. Google made the tools, but you are the driving force behind the site. How you use this platform is up to you. Experiment! Play. Be social. Be creative. Enjoy yourself. Don’t take anybody’s crap, and always remember that words on a screen can’t hurt you unless you let them. Inspire someone. Help someone who knows less than you, especially if you don’t usually like doing that. See how much appreciation and interaction you get back for it. People are fundamentally good — I don’t care if you disagree — and so far, this network has only proven that to me over and over. I hope it does for you, too.

• “Sparks” aren’t gone, they’re now just way more awesome. We include them, appropriately ranked, along with people and posts from Google+ in your searches.
•  We have several ways to control and narrow your results. You can restrict your query to Everything, People, Google+ posts, or just Sparks. You can also switch between “Best” and “Most Recent” which can give very different results.
• You can save a search by using the “Save this Search” button to track your favorite interests. This is like how Sparks worked, but now you get the the best of the Web and the best of the Google+ community in one stream.
• Searches have shareable URLs: You can send someone a link like https://plus.google.com/s/donuts and it will work. In fact they won’t have to be signed up to Google+ or even signed in for the search to work.

Google+ for Android 1.0.7 Changelog:

1. Update: Bug fixes in mobile hangouts
2. Join hangouts from the mobile app
3. Set profile photo
4. Huddle is now Messenger
5. Send photos in Messenger
6. Reliability improvements in Messenger
7. Long press on posts in stream to +1, share and mute
8. Improved video playback support
9. Improved public search for people
10. Granular push notification settings
11. Move app to your SD card
12. Improved +mention support