Actually, spammers have to go through multiple steps to register and post, and our anti-spam tools weed out, literally, THOUSANDS. (Today's total: 458056 Spammers Blocked.) But there's no automated tool that will block a determined human spammer with plenty of time.
There's more spam, in part, just because the boards are busier.
Keep reporting, and we'll keep blocking those that get through.
By the way, if you report a spammer once, we can automatically remove all posts by that spammer--you don't have to report each post individually.
Moderator