ba.general may have thousands of lurkers, so I know that if I ever have a question, I can probably find a few experts residing in the Bay Area to respond.
alt.dragons-inn impressed me. I had no idea that such a group existed, and there I found a place almost like a small bulliten board system (BBS), where friends come together and share a common bond - their stories. I have already been inspired to read the stories for a few days and then develop my own character with which to enter this fantasy realm.
The discussion groups tend to be less about a real online community and more about quick informational postings to the masses. Computer files are still the most useful things I have found on the newsgroups, but I am finding there is some real textual content there as well. My next step will be weeding through thousands of groups to find even more content, and perhaps I will find a group in which I will become a major participant.