A page on FB that leads folks here might be a good idea, though I reckon a lot of folks won't use it if it requires a totally different login. I don't know if there's UBB functionality to log in via Facebook Connect, or if it'd be something that would be desirable if there is--that's something I'd like input from the moderators on.
I do think that within the next few years, standalone forums will be essentially dead. I'd like to explore some options to keep that from happening to us!