All work and no play…. Here’s a site that poses a bunch of “riddles” — but not in the common sense of the word. Instead, each page contains subtle clues about the identity of the next page, which you have to find. You might have to interpret strange encodings, manipulate an image, view the page source, or search for relationships to clues on the Web. Sounds crazy, but very addicitve. Be sure to take the “tutorial” before you start the actual puzzle!