I figured if we reported them, we'd be rid of them.
Just like SE said, just report them under Harassment and give the name and a piece of what they're shouting about and they'd deal with it...
Today i saw the same guy i reported a few days before do his spam shout in Limsa again... So i very very much doubt anything has changed or is going to happen.
Like MasterShake said, not catching one guy because you reported them. Bulletproof logic. You have to keep in mind each world holds well over 250,000+ players now. I'm also sure there are RMT spammers on every world. So just because they don't attend to one person doesn't mean it's not going to happen. Give it a few months and the RMTs will be gone. They're wasting their money anyways, that 13 dollars out of the window every month and with how many RMTs there are, well let's say the numbers are going to add up and SE is going to be making profit off them and not the other way around. They're paying SE to ban them.