I was asked during my presentation today why I don't use Captchas on my blog comment forms. Well, I answered that I've never liked them. Had I seen this, I would have had a better answer - it's a job offer:
I will provide a piece of software that will display CAPTCHA's - you will provide the service of solving them for one 50 hour week. Post your price and internet connection type.
Right now, the bidding is under $1 an hour. At that price, it will be well worth the spammer's time to pay.