It was quite popular. It was a mix of Rails, NodeJS and SocketIO and had 15000 members, and many adult boards.
I shut it down when it was hammered with child porn, “jailbait”, and witch-hunting on real people (like suspected pedophiles that they were tracking down). It was a full time job to be a moderator of all the content, especially all the liveleak re-uploads (you could host videos and images directly on the site and embed them in the chats as well) where people made it their goal to find the most awful, gory and offensive video there is (and I’ve seen A LOT of them to respond to user reports)
Structurally it had a set of categories where you could create persisted chat rooms, with any topic (as long as it matches the category rules). The chat rooms were indexable by google so we had a lot of visitors through google that were looking porn, which was posted a lot. Since anyone could post anything anonymously, even without signing up, there was a lot of content posted.
You didn’t even need an email address - just enter any nickname and a message and you were good to go. Registered members got verified usernames that were visually distinctive from anonymous users.
Bots were rampant but using various bot-traps, fake fields, tracking keyboard and mouse behavior (were there keyboard events? Time betweem them varied a lot or all consistent?) and shadow bans, these were dealt with pretty effectively.
I really didn’t want a captcha. There were no ads. I didn’t make a single dollar from it. I just liked making it and people using it, and I liked the challenge of blocking the bots while keeping the users.
Fun times.