The R3 email thing is a YaHoo group that someone started back in 2004? Its not really a forum, but you get emails from each user that posts something. If it was busy, you could get 10 emails or so a day. If it was as busy as our site you would have to wade through 50 to 75 emails a day. It gets old fast.
That thing will lay dormant for months without a single hit and then someone will post something and you will get a few emails. Anymore the only thing that triggers it is spammers, and then the two or three people still on it make a comment about the spam. I don't believe the guy that started it originally is even still around.
We tried to use that for awhile and it quickly became evident that the email thing wasn't the way to go. It does have a Yahoo photo album but it doesn't seem to work other than general posting. You are supposed to set up member albums but that feature has never worked...