Looking at the highest voted questions on various StackExchange sites is something we all like to do.
For instance, if you look at ServerFault, you can see the top question has 469 votes (as of this writing):
However, if you're a super-cool person in the secret club, you know that there is another question with almost three times as many votes:
How many StackExchange sites have their top question hidden from the highest voted questions tab?
(Of course, ServerFault might have an even higher voted question, for even cooler people in an even more secret club.)