Credit:
Newcomer Repeets tracks hot retweets from today, this week and this month. It also captures all the retweets in a thread and produces trend graphs showing what time a retweet peaked.
It adds a neat new feature, too: you can search by username and see how many times a user's Tweets have been RT'd, along with a roundup of their most retweeted content. For instance, Mashable's stats are here.
While well-designed and useable, the service joins a growing number of retweet rankers, including DailyRT, Tweetmeme and the Retweet iPhone app. Repeets adds value with its username search but might get lost among a growing army of similar tools.