Image Verification (Score 1)

The whole spam issue on open forums could be avoided if the administration implemented an image verification system. Such systems can be seen on many professional websites, including slashdot.org's signup page. Spam bots would be unable to post spam on a large scale, if they are required to enter a code displayed on a human readable image. As long as the image is not a fixed font, or fixed pattern, the bot would be useless. Systems such as this are not hard to design, and would limit, if not almost eliminate unwanted spam posts.