So, you sick of having folks use up company resources playing Farmville at work?
If you have one of the fancier, newer SonicWall Routers, you can just Block the Games and they can do updates to the company Facebook site(s) using this technote from SonicWall.
If you don’t have any legitimate use for Facebook, GMail, etc. at the office and just want to block them altogether, or want to block sites using the Content Filter Service, then use this tech note instead.
Hope this helps. (Sorry Facebook addicts)