Wikia Fallout IRC Channel is an Internet Relay Chat channel that allows users of Wikia's Fallout-related wikis to communicate with each other via live chat through the Internet. It is registered as #wikia-fallout on freenode.
The #fallout3modding channel on QuakeNet is a major channel dedicated to modding Fallout 3.
If you have an IRC client:
If you don't have one: