When Matt Keller was in Ethiopia recently while travelling through East Africa, he met a young student who was making phone calls between a pair of XOs.  Here he is preparing one of the laptops:

This is both simpler and more homegrown than the work Stephen Thorne and Pia did In Australia last winter, where a school ran regular Video Chat sessions with students on a small island who were using their XOs for the first time.

If you’ve had your own telephony and videoconferencing experiences, please share them (better yet, post videos:).