The web is a wonderful tool to help you get work done.  Massive amounts of knowledge are at your fingertips, and countless sites exist for the sole purpose of making your working life easier in one way or another.  Then there's the "dark side" of the web, and I'm not talking "adult" content.

For every site focused on helping you work smarter, there are another handful whose goal is to distract you as much as possible.  The folks at Freelance Switch have a round-up of their 15 favorite time-wasting sites.  Check them out at the link below (at your own risk)