I have been trying to get some feedback on captcha. This is a code which was developed to prevent computerized answers to sweepstakes. The idea is that a computer cannot understand weird forms of letters and numbers. Only humans can understand. Well, I don't understand. You are supposed to copy what is written in the block and my answer is never right. I read a little about it and it seems that each letter or number have a coded meaning. How do you get the rules. That was my question. I can't tell any more and if I could, I... read full review »