Google chrome's incognito reminder. The bit about smiley's is also pretty hilarious to me.
Comment on This Post:
look up O.o I'll stick with firefox. I haven't had any problems with it.
Those last two things are supposed to be a joke. If you really think secret agents will monitor chrome users on a regular basis and that Firefox keeps you safe from secret agents....
Also no need for fanboyism. It's humor.