It also depends on how much privacy you really want, and if you want to be consistent, especially if you get to make friends here. I was Dabs on a gun forum (where almost every other person there carried daily), I was Dabs on some online massively multiplayer game (EverQuest) and was a mod on a forum dedicated to a specific user class of that game, and I'm Dabs on a few other forums about different topics (different topics, yeah, heh.)

In Discord and irc, I'm also Dabs, so people can verify both here and there if it's really me, as there are a lot of impostors on the chat servers.

In some older forums that "required" real names, I used them too. Those forums have almost no spam. It's the anonymous and semi-anonymous ones that attract spam because with privacy and anonymity come disregard for basic netiquette and non-accountability to one's actions.