a decent stopgap iphone app. it allows you to send pics from your phone to another phone or aim service etc....
http://pktpix.com/
only issue i have is, if you don't already know the recipient's phone #, once you are in 'sending sms' mode, it doesn't give you a provision to even look it up, unless you get out of that mode completely. still, better than nothing.
it sends an AIM text message with a URL
go to the URL, view the pic