This is pretty neat – stick any URL at the end of gabbly.com/ and you get a personalised chatroom for that page. Click the link to chat on my weblog.
Not quite sure what the business model is, but it’s pretty neat. I think live chat scratches certain itches other forms of communication can’t match (although the ultimate goal, I think, would be videoconferencing / Skype-style VoIP within the page).
We’re looking at writing a chatroom plugin for Elgg communities, incidentally, so look for that functionality showing up on elgg.net sometime over the next few weeks.