TweetWheel is a web-based Twitter visualization tool that shows you how your friends and contacts are connected with one another. All you have to do is enter your Twitter username (no password needed) and TweetWheel will go to work digging up all of your contacts, and then probing their contact lists.
The process isn't quick, it can easily take a couple of minutes if you have a large number of contacts. But in the end, what you get is a pretty picture showing all of your contacts sitting around in a circle, with an enormous number of lines showing which of your contacts follow one another on Twitter as well. The results would be pretty much impossible to decipher, if not for the fact that you can scroll over any Twitter user's name to get a close up look at their connection lines.
[via Twitterholics]
