SERIOUS TOOL - STUPID NAME
http://www.WhoTwarted.com may look silly but underneath the goofy exterior it's a very userful tool.
Just yesterday, I sorted the 16 million plus followers of @theEllenShow, in paginated results of 5,000 each. It takes a while on larger accounts but works like a champ.
When Not Logged in:
Display & sort followers or followings of any twitter user
Display & sort common followers & followings of any two twitter users.
The result is a list of twitter users who like both, Winstar Casino AND Dr. Pepper. Now you have a list of people who visit Winstar Casino and also drink Dr. Pepper. The list can then be sorted by location & saved in your twitter account - courtesy of whotwarted.com!
View followers that you are not following AND ALSO those who you follow that don't follow you back.
Sort users that follow/don't follow
Choose users to follow/unfollow
Add any of those users to a list OR create or edit a list.