If you want to find the most famous twitterers Twitteverest is your tool. You could give a few twitterer names and we search the friend list of all of them. If someone is on the list of all of them we say he/she is the star of the given users. If you want you could add more users to the filter list by clicking the Add button. By this you will get a smaller list os stars.

http://twitteverest.webmania.cc