I certainly never set out to develop a FileMaker solution that would drive a publicly released vertical solution on the Apple App store, but I now have one going for a client. Basically it is a combination of FileMaker, Word Press and MySQL. FM does all the heavy syncing, continuous updating, and calcs, and MySQL stores the resulting data and is the forward facing database because it is faster at that. Hopefully I can get the company to agree to release info about how it works, but it is pretty cool to be using an app on your iOS device and know all the data you are seeing is being put together with a FM server. Sometimes I'm rather impressed with how FM gets used in ways that consumers have no idea what is behind their UI.
I'm sure I'll hear more stories like this at Devcon. It is always fun to see what all creative things are being done with FM that I have never even thought of. Hope to see lots of you at Devcon!