Major, your information is way outdated. Your link is from August of 2007, just 2 months after the iPhone first became available. That's a description of how to email mutlimedia from the iPhone to another phone... something that has always been possible to phones that could accept email.
It works, but you have to know in advance whose service your recipients cell phone has, otherwise, it’s a no go...
No, you are wrong.
iPhones can send MMS pictures and videos in a perfectly normal way... no need for tricks or complicated steps. I merely pick someone's phone number in my address book and send what I want to send. No complications at all.
MMS only became enabled on Iphones a few months ago. For about 2+ years of the iPhones existence, it wasn’t, and was one of the biggest gripes by users of the phone. It was a discrace it took them that long to finally turn it on.
Are you talking about the 3G? because the first release of the iPhone is not capable of sending MMS.