AppleInsider has some sobering news about the App Store for the iPhone:

The vast majority of apps downloaded from the App Store are in use by less than 5% of users after one month has passed since the download, according to an analytics firm that is also shedding light on other aspects of the business.

I can't speak to that personally - I'm less than a month into my ownership, and some of the apps I have (Yelp and iWant) will be most useful when I'm on the road in an unfamiliar place - so it's hard to say much about those right now. It does mean that TANSTAAFL holds as much for the iPhone app developer as it does for anything else :)

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