In my opinion, second life may be used by people for some purposes like fun or learning something. Actually according to me the densest group is that uses second life for fun namely for game. And the nearest rate may belong to the users of it for chatting purposes. It can mean that those people use it to meet new people, to talk and contact with them maybe for developing their second language or learning the culture of the new people. And the next group, the least rate, I think, is the group of people using it for the purpose of learning but what? To be honest I haven't understood it; but if our teacher makes us do it, certainly there must be some part to learn.