Captchas. What in the hell are they? We've all seem them. Whenever we go to post on FB, it's there, and it always makes us wonder: "What is this, really? Are we sending secret codes to Russia? Are we helping to decode a classic piece of literature?" The questions in our minds never cease. Finally, after completing the captcha puzzle for the umpteenth time, we decided to look it up. Pop the trunk for details...
