If you have more than 100 followers, or people following you on Twitter and want to have some kind of Outlook like manager for managing so much info- this is a great tool from www.refollow.com
Added benefits-
1) Secure Login using Twitter Authorization
2) Visual Click and Easy Follow- Unfollow Blocking based on activities
3) Segmenting groups of people basede on behavior
4) Hidden insights on who all suddenly have un-followed me ( after I accidentally revealed the spoiler end of latest Harry Potter movie- Dumbeldore will sleep with the fishes)
The Screenshot (of my refollow page) below shows you most of the properties-
DECISION STATS 