Would an App Store, for PC applications (Windows, Linux, Mac), that accepts BTC make sense? I couldn't find any sites listed on the wiki that would allow someone to sell an application. There are a few file sharing sites where you can put a price on a file, but this doesn't handle Updates, Refunds, and Support.
Is this something that is in demand in any way? It would most likely be useful for little utilities, things that cost less than 2 maybe 3 BTC, where the low price would make PayPal or CC transactions difficult.