F12, the grappling forum, used to be one of my favorite places on the internet. It barely has new content anymore. There has, for reasons I don't fully understand, been a mass exodus to r/BJJ.
I can't overstate the loss of community that occurred as a result. On reddit, the fact that usernames aren't prominent and there are no avatars makes it impossible to build "characters" in your mind. People are friendly, but they are perpetual strangers.
Previously, I thought the upvoting and downvoting structure of Reddit was great. But, when applied to a hobby I love, the results were soulless and depressing. Opinions seem to be tailored to the crowd in a way they never were on the F12 forum.
A lot of that may be that Reddit attracts younger people who are newer to the sport. Whatever the reason, it's sad to see a great forum whither away.
Don't take online communities for granted. They seem immortal until they die.