I did, but the problem is that I never expected to be scraping for so long and it was always easier to just solve by hand than do a complete rewrite and allow for using CAPTCHA libraries. If I had known I would be scraping for ~3 years, I would have done many things differently: http://www.gwern.net/Black-market%20archives#how-to-crawl-ma...
The whole point of CAPTCHAs is to be difficult to automate. Or are you suggesting automating farming out the CAPTCHA solutions to cheap workers?
I assumed it was a joke. But maybe not?
There are plenty of services that do exactly that. They're pretty cheap.
There's a plenty of service providers that sell APIs to captcha solving services at reasonable prices.
Or if you don't want to spend money, you can always re-host things on your own site. Let your visitors do the work for you.
The main problem is that most CAPTCHAs are terrible, and do a better job of keeping humans out than robots.
Yes. Quick list of providers I've worked with, in no particular order: