My 'high tide', message board wise, was several years ago, when I read and posted elsewhere, and largely on the politics of Christian faith.
Slowly, my home boards were phased out due to economic reasons. First the Excite boards, then those of Lycos. I found b'net with the exodus from Lycos, and started my career here on 'Christianity Debate' in the old b'net community.
The best message boards I ever participated in was a 100% volunteer effort, created and maintained by someone with the web name jonnyglobal. That was in-depth, cutting edge discussion of science and religion, atheism and faith, morality and amoralism proper. Or so I thought. After 3 years, also the 'global atheist boards' were discontinued -- most of our topics were discussed, newcomers met a not so interested group of oldies, and jonny finally decided to stop it all. I miss it, I miss the fellow posters -- jonny, nat, agnos, michael, and the others -- but would barely find the quality time for anything like that now.
The new b'net feels awkward because, with a six year delay or so, the standards have finally reached those of jonny's forum. I feel nostalgic. These new boards bring back too many memories.
I wonder when I will be over it.