I've reported all the spambots I see when they pop up, but I'm sure there's a whole lot more to come...
I don't know what prevention our forum uses nowadays, but a there are some ways that seems to work for a lot of forums.
- Account verification via email after registration
- Captcha's before being able to activate the account/posting
- Custom verification questions that require intelligence (like asking "What's bigger? A pea or an elephant?"
A lot of bots have timeouts when they don't have the ability to post soon enough. So perhaps a white listing of a week or something, or making sure that users read at least 15 threads before starting a thread is possible on their account?
And I was wondering if we use some sort of max number of accounts per external IP?
A lot of the times companies use one or two computers to place this &€!*$ on forums. They'll use a ton of virtual machines running on a single client, but they all come knocking at the door of the forums with the same public IP.
I'm sure you're doing all you can and you're doing one hell of a good job seeing how quickly the spambots are removed, threads deleted, etc.
If there's anything that comes to mind or something I come across on different sites that might come in handy, I'll be sure to drop a reply here
Thanks for all the hard work thus far!