CAPTCHA in an acronym for “Completely Automated Public Turing test to tell Computers and Humans Apart.” It is a type of “challenge-response” test used to ensure that the response is from a human and not generated by computer. In the implementation used by this website, your login, comments, and replies must be verifed by a valid CAPTCHA Code.
The CAPTCHA Code is displayed for you in a small, graphics box, which shows a distorted, multi-colored list of letter (a-z) and numbers (0-9). The code is not case sensitive and can be entered in upper or lower case. Enter the code in the CAPTCHA Code field at the same time you are filling out the other fields (username, comments, etc.). Upon verification of the CAPTCHA Code, your input will be accepted. Input will not be accepted without a valid CAPTCHA Code.