I think that is caused by whatever program he is using to post with.
Yes, it's posted by the wireless version of the forums. The stripped down, basic wireless version for old school phones that have a basic WAP browser.
Now, if the iPhone is so awesome, and Mobile Safari is so great, and we're in a post-PC era where phones can access the full internet, and we don't need desktops, and blah blah blah, then tell me *LTD*, why are you still using the basic bare-bones WAP browser on your iPhone? Shouldn't Mobile Safari be able to handle the full, desktop version of the forums? I browse and post on the forums using the full version on my Android phone all the time. Can the iPhone not handle the full forums?