G+ Count Favicon
Replaces the favicon on plus.google.com with one that shows the current notification count. Trivial but nice visual notification.

Replies and more for Google+
Adds reply and reply-to-author buttons to Google+ comments and Share dropdown menu with options to share a post on Twitter, Facebook, etc.
Surplus
Google+ integration for Chrome. Harnesses native Notification component. Allows to reply without the need to open G+ page. Doesn’t allow +1 posts, though. Extremely useful for quick replies.

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July 18, 2011 at 12:41 pm
Google+ Tweaks: https://chrome.google.com/webstore/detail/ldhcojnagiekommchjbokpofakjeknme
* Toggle comments
* Preview images when you mouse-over them
* Favicon badge shows the number of new notices
* Make Google+ use your browser’s full width
* Force all images in posts to thumbnails
* Pin the Google bar and other navigational elements
* Yellow “Post muted” notices automatically fade out
* View post actions as buttons instead of as a drop-down menu
* Hide various elements of Google+ you don’t use
July 18, 2011 at 12:54 pm
This looks interesting. Thanks for sharing the link Jerome!