Twitter - Unfollow

One of the things Twitter interface currently doesn't do well is it's search functionality and managing an account's Followers and Following.  Luckily they have allowed the public access to their API and programmers in turn have created all sorts of Twitter related applications.

Twitter Rules and Best Practices

Twitter has throttle down accounts to try to deal with people setting up accounts for spamming purposes.  They did this by limiting the number of followers a user can have.  When you first setup a Twitter account you are only allowed to Follow up to 2000 Twitter users.  In order to increase this amount you must have 2000 Twitter followers.  Once you’ve followed 2000 users, there are limits to the number of additional users you can follow: this limit is different for every user and is based on your ratio of Followers to Following. They also have other policies in place like regulating follow churn and aggressive following.