Couldn't agree more. I wouldn't say 'spam' per se, but they're making threads into group chats and it ruins the fun for those who actually want to stay on the topic of the thread. If you've got other things you and your friends want to talk about, take them elsewhere. It's not funny, it's downright immature and childish. Have some shame, please.
And don't be stupid; obviously I'm not talking about the threads here on the basement (the basement is for spammers so I do understand), but threads everwhere else. Again, be civil and stop taking your funny businesses into other threads.