"The hacks that were proposed in the other thread were very interesting, but ultimately spammers will just post six posts instead of 5, etc."
So far, from my experience, I haven't had a spammer bypass my limit.
They simply post once, and move on to the next target.
I've had a couple post twice, but the common traits thus far have been either just modify hello world, including title (but not the slug), and then move on, or they make another post real quick and leave.
Of course, that's not all of them, mind you, as there are a few freaks in every crowd, but thus far it's worked. Not to mention that the restrictions aren't mentioned anywhere on the site.
- addition:
I should note though, that eventually with any setting or fix that is generated, they'll figure out a way around it. Then we figure another move, they counter. And the cycle keeps going.
Spam filter for post content... now that's something that might have merit. Although Akismet isn't an option (unless you have the money), surely we can put our heads together here and figure something out.
Where if a post is suspected, it is set to pending, and can only be approved by a site admin. I dunno, what I'm doing at the moment works, so I guess I'll worry about it later.