I have met another DID (mpd) person through ICQ, but she's not near as talkative as me - go figure.
I also join in sometimes on h20, particularily on the subject of incest, etc. You're right, it does help to talk, see your thoughts in words, and to see other people's thoughts.
Have you ever noticed that you can spot, most of the time by their wording or phrases, a long time JW, short time JW, elder, etc? May take a while, but the attitude and wording comes through.
Same with incest and disorders. I'm only familiar with my own - and I'm not like most of them (I'm sane - really I am), but I can tell at least an amateur impersonator. You see in on h2o sometimes. I don't think I could ever spot a good impersonator.
Do you know what I find quite interesting? I have different personalities, in a limited degree. I find it somewhat offensive, but necessary to use a name like "waiting" here. But at least I use only one.
My son, who does not have any personal disorder, except marginal intellligence, IMO, finds it fun to have 3/4 names on the web - and tries to match his personality and writings to match.
I, who actually have that ability/abnormality, find that quite distasteful. I told him so and he said, "what's your point?" So much for mothering......