isFollowing Bookmarklet - Who is following who?20 Dec 2010
How to use it?
Click and drag isFollowing to your bookmark bar in the browser;.
Click in isFollowing in your bookmark bar;
Fill the screen name (a);
Fill the screen name (b).
The project is available on github as an open source project gist.github.com/744291.
You’re welcome to make your contributions and send them as a pull request.