jimbeetle - 8:52 pm on Nov 4, 2006 (gmt 0)

There are a couple of them out there for different CMS flavors. I'm having a bit of a problem wrapping my head around how effective they might be. I guess I'm assuming that if they can train bots to use OCR to read image captures it would be even easier to train them to read and answer a simple text string such as "Spam protection: Sum of 4 + 10?"