Get rid of the asirra captcha.   It took it a dozen times to go through.  It is a terrible service.

Yes, I'm positive I know the difference between a cat and a dog.  It just doesn't work.

If you're looking to have people turn away from your game then by all means, keep asirra.

Anyone with less patience will abandon the attempt to make an account after the third attempt to pass the captcha test.