Some services offer this service as a natural matter of course, such as InternetRelayChat. It is less clear whether this service is vital to a TransactionBasedCommunity like a wiki or, say, AdvoGato. However, it is possible to roughly track "sessions" on a website or one could force users to log in and then expire their sessions if they don't log out. Then, one could list the logged in users.
EverythingTwo makes interesting use of this. While it is in many ways similar to WikiWiki, it provides a "List of Fellow Noders" as well as a "ChatterBox" by which on-line noders can chat with each other. It's an interesting addition in that it divorces some of the conversational aspect of noding from the pages themselves.
While the original ideas of how to do this involved using InstantMessaging in the browser, say via the JabberProject, now XMLHttpRequest? exists. With an XMLHttpRequest? dynamic interface to a wiki, it is possible for the server to keep track of who is on or editing a given page at a given time, and thus notify others who are reading / editing pages, thus adding PersonalPresence? to the wiki. Thoughts? -- SunirShah
Oddmuse has had the basic infrastructure for some time because I wanted to know about the ratio of readers to writers. I haven't looked at it in ages. [Example]. Maybe the option of using chat as presented at Web Based Communities 2005 would change the experience. See [WebRogue] (not the rogue-like game; broken link, contact email@example.com). The simple list of who is online, even if extended to show who is online and what he's looking at, seems to be not enough. -- AlexSchroeder
As we have on FractalWiki:FR/SignatureAutomatique and CommunityWiki:IndicationAuteur, I think it could be really interesting to test a PersonalPresence? attached to the automatic signature? Could be a way (pehraps?) to have less ThreadMode in inviting any MembreDeLaCommunauté to connect directly with the protagonist via a jabber/IM connexion? -- ChristopheDucamp