Essentially, what this means is that as long as there's a properly-configured Jabber server that you can connect to, you can find other OLPC users and interact with them over the network. Tom Hoffman graciously set up just such a server at xochat.org, and I've talked with a few different people there and visited a shared document.
To tell your XO to use the xochat.org Jabber server, you can just open the Terminal activity and do the following:
That will save your old Jabber server in the file$ sugar-control-panel -g jabber > ~/old-jabber-server $ sugar-control-panel -s jabber xochat.org
old-jabber-serverin your home directory, and tell the system to use a new one. However, the system won't automatically update itself after this change; to do that, you need to hold down the
ctrlkeys, and press
eraseto restart the interface.
Once you've told your OLPC to use the xochat.org Jabber server and restarted the interface, you can just press the Neighborhood button — that's the circle with a ring of several dots in it — and you'll see everybody who's using an OLPC with that server. You can create group chats, share documents, and use all of the OLPC collaboration features because all they really require is a way to locate the users you want to collaborate with. The higher-level software on the OLPC will take care of the rest.