This forum goes through periods of slowness. As a member since the m6 days of 10 years ago, I think I can say the forum is in general not as busy as it was around 2007 or so. I was a moderator back then, though, and I made an effort to read every post in every thread, so maybe that skews my perception, but it definitely seemed to be more traffic.
There are a bunch of old forum members we never see anymore, guys who used to love to talk and debate stuff for page after page.
Greg Burch, Simonpro, etc. And then there were guys like flytandem, who was always posting crazy slingshot scenarios. computerex was a kid who would produce an addon within hours of someone mentioning it, I think he was banned or something but for a while he was very active. There was a guy from Latin America, Pablo Luna was his name maybe? Aenemazoso was another one...
It was a busier forum. Imagine a bunch of Urwumpes (and yes, he was there then, too, of course) all posting and arguing with each other constantly.
At least we still have Artlav and his mad scientist experiments. Guys like that make this a fun place to hang out still.