One interesting RSS feed I an subscribed to is anarchia.org, this is a meta feed with random geeky stuff. Yesterday, they had a link on an interesting C competition, the underhanded C code competition. The goal of the competition is to write code that look correct, but does something more. In this year’s edition, the goal is to write code that appears to black out areas of an image, but actually preserve part of the information in the image (and so the blacked out areas can be reconstructed).