Mobile sites dedicated to the iPhone, iPod Touch and iPad including iPhone news and fan sites,iPhone modding, jailbreaking and hacking and IPhone user forums.
ModMyi
modmyi.com/forums/ (xhtml-mp)
Apple, iPhone, iPod Touch and iPad, user forum with the emphasis on modding, hacking and jail-breaking Apple's mobile products. Built using Darthos's mobile style for vBulletin, the site works well in the iPhone, Android and WebOS browsers and is usable with Opera Mini and the Symbian 3rd and 5th edition browsers. Pages average 100 KB in size. There's also a mobile optinized iOS and Apple news blog at modmyi.com but the main event is in the forums.
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iLounge
ilounge.com/index.php/mobile (HTML5)
"iLounge is an independent resource for all things iPod, iTunes and beyond" It's also probably the best current source of iPhone information. The site is constantly updated. The mobile edition includes the full content of the news blog and the forums. I'm actually finding much more iPhone stuff on this site than on TUAW and MacRumors