It's been suggested before to exclude certain boards from counting as Activity.

The Newbie you're talking about has an account older than mine, 18 Posts, and created 16 topics!

I'm not against allowing Newbies to create new topics, but there should be a limit. All of his 16 topics are useless, and apparently creating a topic is easier to spam than posting in a thread. This way, his shitposts can't be offtopic, even though topics like that have been created countless times already.

Another beauty:
One spammer creates a thread, countless other spammers gladly "reply" and spam more.

I'd say hopper28755 should just be nuked.