OK.  I admit it.  I was searching for the words to an old Rolling Stones song.  I don't know whyyyyy.  Something interesting happened.  I always knew it was true but this was real proof.  Have a look at the picture below.  It is a screen capture of my computer desktop.  I have added the annotation in red.

Of course this bothers me.

If you are in China, one thing you can do is set the security on your browser higher.  On IE7 click on Tools - Internet Options.  A dialog pops up.  Click on the "Privacy" tab.  Move the "slider" on the left to "Medium High".  This will block "third party cookies".  That's what you want to guard against this.  I won't go into the boring details.