Most websites use captchas somewhere. A captcha, for those who do not know, is a system used to confirm the form is being submitted by a human and not an automated computer program. There are various types of captch such as math and graphical. For the math you have to solve a simple math such as "3 + 7". For the text you are asked to type in the text you see on the screen. The text is usually distorted to make it difficult for computer programs to decipher them.


