As was pointed out here, Mathoverflow is listed as being 2012 years old here.
4$\begingroup$ It is true, MathOverflow was actually a secret society in the days of the Roman empire. When Nero was watching Rome burning it was actually a fire started by the MO guys, because someone had suggested that $\pi$ is irrational! :-) $\endgroup$– Asaf Karagila ModJun 25, 2013 at 11:25
1$\begingroup$ Coming to think about it, this could be a cool RTS game in the line of Age of Empires. $\endgroup$– Asaf Karagila ModJun 25, 2013 at 11:35
$\begingroup$ @AsafKaragila whereas the first thing that came to mind for me was Age of Aquarius... $\endgroup$– Willie WongJun 25, 2013 at 11:46
StackExchange.com consumes our public API, which is guaranteed to return a launch date for every site, but didn't for MO. Sites that were not launched through Area 51 need to have this value explicitly set, which hadn't happened for MO yet. It's set now. Thanks!
By tomorrow, all those "zero denominator" problems will go away. Right?