It looks very similar to the Basecamp and Campfire designs (ex: http://campfirenow.com/). However, both of those designs are fantastic, and I don't see too much of a problem with using them as design inspiration for a non-competitive company.

It looks like peashootapp.com which looked like basecamphq.com...

http://peashootapp.com/

wow, it does not look like peashoot. It is a near-exact clone of the site! I'll leave my personal opinion of the matter at the door..just saying!

I thought the exact same thing actually.