I'm a member (and administrator) of a number of bulletin boards both at work and play. Although I'm just a newbie here, here's my two pence/cents: In view of the number of members, and for all the reasons stated above, I see no real benefits of a chat room. The community works extremely well, the way the forums are divided is well thought out (although there shouldn't be many more - it could become frustrating dipping in and out of a number of forums that could otherwise be catered for in the "All GT40" section), and the search archive is available "at your fingertips" - most posts for technical advice get a good response.
Lynn's Emergency forum is an excellent idea, as it's permanently available and, provided you make a note to visit this forum, all recent posts will be available when you log on.
Ron, you've done an excellent job so far - in my book, unless there are another 40,000 GT40 owners out there in the near future, there's no need to do anything more.
Cheers
Rob
"Life begins at 40"