Twoorl is just a clone of Twitter, whereas Myspace extended past Friendster's features and made it its own site. Plurk and Pownce are different enough from Twi

Twoorl is just a clone of Twitter, whereas Myspace extended past Friendster's features and made it its own site. Plurk and Pownce are different enough from Twitter that they're not seen as just clones, that they fall into the competitor's department.