A few cliffnotes:
Muscle Mayhem was way ahead of its time in terms of forum design. If you compare the site to what Getbig looked like in 2002-2003, its no comparison. The thing that killed the site was over moderation unfortunately.
People Around:
I was one of the first members. Chad actually asked me to join up to help build the Nutrition section. At the time, I was at Meso-Rx under the name Hefty Smurf 2000. It was also the first time I used the name "Vince Goodrum". King Kamali actually respected me for being one of the few people who used my real name even though Vince is a nickname. I spent the majority of my time posting articles in the Nutrition section...same thing I did here Getbig at the time....that's why some people didn't remember me as I hardly post in Gossip at the time
Keith Jones (Onlyme) mostly posted in Bodybuilding History. Contributed a lot of great material as well as some awesome powerlifting and strongman stories.
Layne Norton at the time was an arrogant little kid who spouted off some really stupid shit. Bob Chick and Tom Prince ripped him a new one and ran him off to BB.com. He got smoked pretty good
Tre....well he was still Tre...

OneMoreRep was mostly posting MMA shit I think...could be wrong
True Adonis was pretty big husky guy at the time. Posted about his "calorie is a calorie" deal. Always been a good friend and helped me get payback at a very bad time in my life.
Tom Prince posted most often out of all the pros followed by Bob Chick, Craig Titus, and Kamali.
Chad Mower went by the name Ifearnoman
There was a regular poster named BigKev....scary dude. Threatened to kill King Kamali openly over the boards. Died in a shootout with the police....shot himself to avoid being taken alive