Real-time startup Topsy launched its own variation on the retweet button today to compete with Tweetmeme’s leading version.
It’s important because the retweet button was one of the distinguishing features that allowed Tweetmeme to break out from the pack of real-time startups that launched earlier this year. It gave the U.K.-based startup broad exposure and traffic with north of 50 million retweet button impressions a month...