My two cents: everyone is making this a big deal, and it isn't. 37signals is respected, and they do great work. For a startup trying to get funding, a few images and a layout goes a long way, especially if it's just a small team of devs with zero design experience, etc. Sure they shouldn't have copied, but sure I shouldn't have googled the answer to that coding problem I just spend 2 hours slamming my head against the desk over.