Hats have begun! As part of an attempt to spread holiday cheer, Stack Exchange has decided to do a winter hat bash.
so, you might see something like this when you login to Ask Ubuntu today:
Hats galore all around! So, go forth and earn hats.
And if you dislike hats, there is an opt-out button - just click the "i hate hats" link, and you won't see any hats.