The following AI newsgroups may be of interest:

Artificial Intelligence: General Discussion	(comp.ai)
Artificial Intelligence: Artificial Life	(comp.ai.alife)
Artificial Intelligence: Games	(comp.ai.games)
Artificial Intelligence: Natural Language	(comp.ai.nat-lang)
Artificial Intelligence: Philosophy	(comp.ai.philosophy)

These are Usenet newsgroups and web-based access to them is provided by Google Groups.