The ultimate time-waster

You've got to try this site. It's got a bunch of real Vegas slots to play online for free. If you choose to, you can also use your earnings to enter into cash drawings. (Don't email me telling me that these sites fill up your email with spam or infect you with spyware. I think it's safe to assume that they do. Just make sure your computer is protected, whether you go to sites like this or not.)

Link: FreeSlots.com