Just read this on Scripting News:

Heads-up, some time in the next few hours (Murphy-willing) we're going to release tcp.im, which allows Radio and Frontier to be an instant messaging client or server (either can be either).
Okay, this is insanely great, or at least has gigantic potential to be great. I just hope ActiveBuddy doesn't swoop in and claim to have invented the whole kit and kaboodle. Barring that, I can see a whole suite of new P2P apps with desktop servers, kicked off by the UserLand crowd.

This makes me want to find a decent machine for Radio to run on and give it a fair amount of attention again. I wish it weren't so demanding of my poor iBook. But I do need excuses to convince myself to invest in a new ?TiBook...