TwitRank ranks twitter users on a scale of 1-10 based on their authority. TwitRank goes beyond listing users by total following count, by calculating authority based on references much like Google PageRank. TwitRank uses several user variables, including account age, account activity, and the authority of a users following. Following many users won't help much in this ranking, idem for
having many followers but with inactive accounts .
The first person who can find a twitter spammer with a TwitRank over 2 gets a free t-shirt.