At today's OLPC testfest, the team did some experimentation on other groups at the Southern Cross:

Social experiment: put some XOs on a table about two metres from us,
watch people walk up and play with them. Kids look real close then sit
down and play activities (we did not start any activities). Adults
look from a distance and look around for owners, see us and walk away.
Kids get dragged away to eat but when they return they bring friends.
The kids are showing each other everything, very exciting. They have
enough XOs for one each but they are constantly looking at each others
screens and pointing and talking. They worked out and then showed each
other how to use the frame and activity circle.