I stumbled on TT while researching something or other many years ago - long before this "re-launched" version was needed!
I was the 54th member of the original TT and TT was actually the first forum I joined; before Garage Journal (which used to be MUCH better), the now-defunct Garage Hangout, and the replacement Garage Gazette.
I now spend most of my time here & at GG.
Way back when I used to read Mark KW's tool board which was interesting. That may have been called ToolSource at one time too. But it was an older-style forum and they were hard to read, so when GJ started to grow (it was new back then) and had a nicer format, I switched.
I've also read and/or been a member of Practical Machinist, Yesterday's Tractor, Craftsman Tooltalk, Collecting Snap-on and probably others...