Thanks for sharing. We've had a couple of additional web app ideas, and I think figuring out your user funnel is the most important part of deciding to move forward.<p>After a bit of discussion, we've decided to identify a few key pain areas and then brainstorm apps around those pain areas rather than taking the first idea that comes to mind. With the app market the way it is, a good idea isn't good enough. You need something that fits a market (that's preferably under-served or mis-served), has a good viral component and is novel. Engineering what app to approach is almost as hard, and less straight forward, as developing the app itself.