So, kind of a question about what others are doing. What plugins, settings, and procedures are people doing to reduce potential spam on their NodeBB communities? In the past, the spam rate for us was very low and not a big deal. Now we are under constant spamming and have to delete easily a dozen spam users per day. I know nothing will reduce it to zero, but there is some low hanging fruit that seems like we could discourage.
For us, the big bulk of the spam is automatically created accounts, posting once, without any attempt to look legitimate with nothing but straight links or nearly so going to things totally unrelated to the community (often, plumbing or carpet cleaning services in a different country than the community is based in!) Very odd. Our site's URL is in Europe, our host is in NYC, and the spam always targets Dallas or India! So weird.
Anyway, right now we aren't using any plugins to combat this. We just have moderators who nuke any blatant spam accounts instantly, and who delete spam posts when there is some potential of the person being "real". And we keep up, but there are so many created during the night (US time) that when people start posting in the morning, they tend to see the posts before the mods can eliminate them.
I don't want to go overboard on spam filtering, but would like to make it more difficult for the obviously automated garbage to slow down or stop. The human-backed, or really complex stuff is going to just require humans to filter out for now. Is there a good Captcha option that people like? I'm assuming that "at registration" is where we want to stop people. I know we are talking about how to modify the "About Me" stuff to make that less attractive to spammers, too.
What are others doing? What do you suggest? What hasn't worked? Thanks.