-Commercial captchas that need research
(I was posting here on The Escapist and a captcha came up that asked me "what is the name of Toyota's research department?" or some such nonsense, and I honestly didn't know, or really care and my worry was that I wouldn't be able to make a post until I brought up a new window and looked up information on Toyota)
Side-note to the Escapist: I'm not a publisher's club member yet, I do plan on it though, and I understand that times are hard, and you need money, commercials are a perfect way to do it, and commercial captchas aren't THAT intrusive, but seriously, if the information isn't IN the captcha, then it helps nobody unless you really need to lower traffic fast. P.S. If I buy the membership and have to deal with advertising captchas I'm gonna be pissed