You can recieve MMS messages… sort of…
If someone send you a picture/video message you have to log into the att picture message website with a name and password they give you for that particular photo that lasts 7 days.
its a pain in the balls…
Next month the iPhone 3.0 OS will be out… MMS messages sending/recieving will be integrated so now you can send dirty pictures to everyone in your contacts YAY