Inferring and Visualizing Social Networks on IRC

PieSpy - Inferring and Visualizing Social Network on IRC
Very interesting app to create network diagrams of user interactions on IRC. Something like this for jabber would be interesting too.

PieSpy is an IRC bot that monitors a set of IRC channels. It uses a simple set of heuristics to infer relationships between pairs of users. These inferrences allow PieSpy to build a mathematical model of a social network for any channel. These social networks can be drawn and used to create animations of evolving social networks.