You know who isn't on the list?
It's a denial of service attack. The only sure way to slow it down is to increase captcha complexity.
That won't stop it from hitting this house of cards of a website with 2 megabytes every few seconds.
It's getting a captcha every time it posts so it can't be nailed down to an ID. This has happened several times before, and they always end up having to do the same thing: increase the captcha length to waste its resources.
Filtering posts only makes them not visible to you. The server, which barely seems to work as is, still takes
you know, it's easier to just call you stupid.