And then they have to parallel process, since even without auto-ban from excessive blacklisting, they get blacklisted by everyone, they need new characters, so they'll need backups. And if they can't just slam out a fresh level 1 anymore, they need a LOT more. And that means the annoyance of botting or leveling, PLUS they have to have what, 10-20 accounts idling at any given time? That's a large amount of connections, unless they go through proxies and such, which is yet more annoyance. Also, something that might be noticed, and acted on before they can even START spamming...
I'm not thinking this will end anything completely, but at least you'll have the knowledge that it's MORE annoying for them to tell-spam you than it is for you to blacklist them! There's a line as well, once it takes more money (and time IS money) to spam adverts than they get back from the adverts, they no longer have a financial incentive to DO it in the first place.
