Google has releases handy website called “Takeout” using which user can export Google+ Contacts, Circle, Stream, +1s and Picasa Albums and download them.
Google+ notifies users when they get added in others circle which is of course a basic feature any Social networking site should have. But similar to Facebook, Google+ doesn’t notify user when they get removed from others circle! Bag! Personally I don’t like it! But here we got a Chrome extension which provides this option for us.
Twitter introduced a new Twitter Follow Button which now can be integrated with any website. Here is How to add Twitter Follow Button an any website / Blogger / wordpress blogs.