"Pownce is competing with 37 Signals."Every new Web app gets compared to its predecessors. Pownce, the new messaging, sharing, and microblogging service from Digg founder Kevin Rose, is no good because it's just a poor man's Twitter, right? No, says startup expert Lane Becker, because Pownce isn't a messaging service — it's a productivity app, and it's competing with development boutique 37 Signals, the makers of Basecamp, Web-based software for group collaboration. To which 37 Signals says, "First of all, it's named after a cat treat." [Satisfaction: Pownce]