scooterdude - 7:38 am on Mar 2, 2013 (gmt 0)

As the karting instructor used to say to us, lads the Blue flag means,

"You are doing very well indeed, however, the kart behind you is doing just a little bit better, so pull over an let him past "

You could accept what I call the continuing fantasy that Panda is an Algo,

or

That some chap, in a small town full of well paid grads, in a country where a small town full of Well paid grads is possible/affordable , assigned your site a editorial score that changed your sites traffic band, "blue flag" moment, bye, bye your traffic