This is from the Skeptics.SE front page, but it is affecting all sites.

The real answer rate is around 88%; it has recently started being reported incorrectly.
Stop Press: The first fix to the issue has changed it to -88%:

Thanks to Sklivvz for the image; sorry we didn't have time to hand-draw the circle.
num_jokes_about_disbelieving_a_skeptic += 2;