Perhaps a battery saving tip. Seems to be working great so far for me today. Last night I charged the iPhone up fully, on the included dock by the way. Until now I've been charging it on an iPod clock radio that seems to have worked fine. Anyway, before I left home this morning I switched my e-mail from checking every 15 minutes to ever hour. So far today my usage stats say 1.5 hours of use and my battery is barely off full. I mean you can hardly even tell it's not full by looking at it.
In that hour and a half of use, I've done e-mail and some light surfing, and some searching on YouTube but didn't watch anything. This was mostly on WiFi, but some on EDGE as well.I also used Google Maps to navigate to a location here in town, and took one brief phone call. So, a nice mix, with WiFi still active, and it seems like I'm getting improved battery life already.
The only two things that have changed are that I charged it from the included dock and I switched the Check Mail option to an hour. I doubt the dock plays much into it, but it seems that the checking mail things has.