Linux Genuine Advantage™
And now for something completely different 
http://www.linuxgenuineadvantage.org/
From the web site :
Now you can make M$ users fell at home 
http://www.linuxgenuineadvantage.org/
From the web site :
Quote Linux Genuine Advantage™ is an exciting and mandatory new way for you to place your computer under the remote control of an untrusted third party!
According to an independent study conducted by some scientists, many users of Linux are running non-Genuine versions of their operating system. This puts them at the disadvantage of having their computers work normally, without periodically phoning home unannounced to see if it's OK for their computer to continue functioning. These users are also missing out on the Advantage of paying ongoing licensing fees to ensure their computer keeps operating properly.
Now you can make M$ users fell at home