Unfortunately, there's only so much that can be done to stop spam on large forums like this. Doing too much more can start to impede on the rest of the users (such as forcing them to put in a code every time they post, changing user posting permissions that would make life difficult for newbies, etc). So the only thing that can be done is at the registration screen for the most part. There's a security question (related to FFXIV common knowledge) as well as an image verification. While there are other measures that could be taken, such measures would impede on other users more than necessary and I'd rather avoid taking the SE approach of punishing others for the actions of a few spammers here and there. We do promptly delete such posts though and encourage people to report them immediately if we don't see it right away.
