I can understand the need to filter humans from machines on the Internet, but we need to do a much better job. It seems like the most common captcha software I run into these days is reCAPTCHA. The system has some noble goals - specifically, users who submit captchas are actually helping digitize books. However, here's the problem:
What the hell does that say? The first word is obviously "the", the second? "Claccupr?". Perhaps I have bad eyesight, but I often get these wrong. Here's an alternative proposal:
Any ideas? Someone should build it!