Here's a clever concept that I would never have dreamed up myself in a million years: iTunes ringtone podcasts! The idea is this: you subscribe to podcast that delivers ringtones to iTunes and allows you to sync them directly to your iPhone. I gave it a try, downloading one "episode" and sure enough it was immediately available for iPhone syncing. There aren't a lot of ringtones at this point -- just variations on the teen/mosquito high-frequency buzz -- but as a proof of concept, it's very neat indeed. Hopefully others will pick up this idea and run with it. I'm not a big ringtone aficionado personally but I know a lot of people will love this -- especially for well chosen ringtones sampled from real life.