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The most popular request I get is How Do I Get Twitter Followers.
While I don’t consider myself an expert, I did put on about 10,000 followers in 2 months. Because you asked for it, I’ll show you exactly what FREE sites I used to get Twitter followers.
Tweepi : I use this to find people with more friends than followers, that are online
Twitaholic : I use this to find people who have tons of Twitter followers
Topsy : I use this to find out who reTweeted me
FavStar : I use this to find my most popular Tweets
Who Unfollowed Me : I use this to unfollow people
Just Unfollow : I use this to unfollow people