I discovered picturephoning.com recently. Here is their blurb:
“picturephoning.com covers the latest news on camera and videophones, their social impact and more recently, what's the latest on mobile socializing and user generated content going mobile”
They also have another site textually.org:
“textually.org is the entry point of three weblogs devoted to cell phones and mobile content, focusing on text messaging and cell phone usage around the world, tracking the latest news and social impact of these new technologies.”
Check it out. But beware, it is easy to spent way to much time there.