That was mentioned already, but thanks for reminding us.

What we really need from Apple is a read/read all feature if you swipe right to left. And delete/delete all if you swipe left to right depending on what email page your on.
I got a few more tips:
Dialing AT&T 411 will cost you money. Use Google 411 instead.
Dial from any phone
1-800-GOOG-411
(1-800-466-4411)
And it's free. Google doesn’t charge you a thing for the call or for connecting you to the businesss. Regular phone charges may apply, based on your telephone service provider.
Don't leave your iPhone plugged into your computer while it is off. It may actually drain the battery. (This is in the online pdf manual) Some PC's have USB ports that stay powered so you can charge devices off them still. Mine is one of them which is nice, so I don't have to worry about that.
To chat since iPhone didn't come with iChat use the Safari browser and try a service like
iPhone.beejive.com
It works pretty well, but too bad at the Home Screen you can't see new or how many messages.
PS: You can use this post to access the services listed above. Just click the number or link in Safari on the iPhone.