MTV has launched MyMTV, a mobile social network. According to 901am (or, more precisely, the press release from Viacom), "MyMTV members can create their own profile pages as well as upload and share video taken on their mobile phones. They will also be able to link to pages created by their friends or content providers."
Beth Kanter from Beth's Blog is heading to the Cambodian Blogger's Summit and is gathering ideas on mobile video blogging (posted on Mobile Active). I was in Cambodia (Siem Riep) about three years ago to conduct trainings with young political leaders and social media never crossed my mind as a tool for them to use. In so many ways, that seems like such a long time ago.