From OLPC

[edit] Samat Jain

Samat Jain was one of the Summer 2006 interns for the OLPC project. He no longer works there and is no longer officially affiliated with the OLPC project, other than being a volunteer.

You can see his contact information at his personal homepage. When he has Internet access, he's idling as 'xjjk' (or some variant thereof, e.g. 'xjjk-T42p', 'not-xjjk') on the OLPC IRC channel.