can anybody confirm that the AIM app does not use text messages?
I can't guarantee it, but it absolutely should be no more text messages than an e-mail; message lengths aren't nearly the same limit, etc. Even on my old T-Mo phone, no data plan on that phone, back a year ago, the AIM app would work without a data plan but used air time, minutes, not text messages.
Oh, on other app fronts:
Shazam is incredible. My wife is always hearing some song on NPR or something, try to remember the name or sing part of it to me, but she doesn't remember enough of the lyrics or the melody, whatever. This is perfect. I threw some mainstream and pretty obscure stuff at it, and it got it all right first try, over EDGE and WiFi. Midomi, which does the same thing, but lets you search by typing, hum/sing about ten seconds, or capture a song playing, not ready for prime time on the hum/sing or capture portions. Misses easy stuff from actual song playing, song not even in the top search results returned, songs Shazam nails in seconds.
Location services in Apple and 3rd party apps work with triangulation on EDGE phones as well as GPS on 3g iPhones.
And, lastly, I figured one of the first apps would be something enables video, at least short clips, on the iPhone camera. I was thinking the CCD camera will certainly do video, just Apple hadn't included the feature. Now I'm wondering if this is harder to pull off than I thought.