Don’t waste too much time on picking a perfect name for your product. It doesn’t matter very much.
One thing we learned early on talking to Basecamp customers: Many of them didn’t even know that the app was called Basecamp. They called it “GroupHub” or “ProjectPath” because that was their project URL. Didn’t stop them from using it (or paying for it) though.
And what about picking a name that’s available as a domain? HighriseHQ.com and Backpackit.com have worked fine for us. Search is the way most people wind up finding us anyhow.
Obsessing over a name is an easy time trap to fall into when you should be focused on more important obstacles (i.e. building something that people truly want to use).