Zapfrog.com. Your Media, everywhere.

ZapFrog.com is an online mobile media community that lets you store and share your photos and videos.

Some useful features of the site include: Easy sharing with friends, photo processing (rotate etc.), sharing with other social network sites and text message blogging.

Brightkite.com - Location based social network

From the site:

No GPS Required You can use Brightkite from any phone or laptop.

Frappr

Not strictly mobile, but certianly a very interesting location driven site:

Frappr.com - "Put your group on the map"

Ron Jeremy Mobile Moblog

"Four moblog reporters sending images from the RJMobile launch party  as they snap them, as well as video and audio interviews with guests and celebs."

Via Alfie Dennen and Mat Brown of Moblog.co.uk

Moblogging Competition

ZeD a national arts and entertainment  TV-Web program produced by the Canadian Broadcasting Corporation (CBC) in Vancouver BC Canada has  a competition on right now for cellphone photos - the best entries will be featured at an international digital festival in Vancouver called Vidfest and the winning entry will receive 500 cash (cdn).  For more information check out the contest details here.

Digital postcards from a mobile phone

Nicely researched moblogging article from the BBC.