Sky Captain and the World of Tomorrow: I posted on this entry over at Joseph’s Scott’s blog, and he has an interesting comment spam prevention tool going on.
The comment form asks you a question — in my case, “What color is an orange?” I tried to be cute and put “Um, orange?,” but it doesn’t have much of a sense of humor. Unless you write, simply, “orange,” you get no joy in posting your comment.
Interesting concept. When the page reloaded, the question was the same, so bots could predict it. But (1) no bot is going to custom program something for one site, and (2) he can just change the question to something like “When was the War of 1812?”
I think he’s got a winner here. Is it any better than a captcha? I don’t know. Easier, though.