In brief: Mentoring Worldwide is forming out of a group of people who want to
make a difference. 350 people signed a pledge to mentor people in
the developing world for free using internet technologies to communicate.
Here is the blog: http://mentoringworldwide.org/blog to tell the story of the project. It's started by Lucy Hooberman, she is at the BBC in New Media Innovation in London, but this is her free-time activity.
By the way. Thanks to this blog I've found CooperationCommons - a new project by Institute for the Future and Howard Rheingold.