Mathematica.SE has been given the opportunity to participate in a frivolous levity called Hat Dash, wherein user avatars are decorated with various hats for different activities:
Some points from the devs:
This year, we're expanding the promotion to all sites which choose to participate, and redesigning the hat selection to be more appropriate to the entire network (no severed Wampa heads). Some of it is holiday-themed, some of it is a bit silly, and all of it is (hopefully) fun!
Individual users who don’t want to participate, don’t want to see hats, and/or are generally anti-hat will have an "I hate hats" option available, just as we had on Gaming last year.
We will have opted out by default by the 28th of November if the community doesn't request this.
Based on the community's feedback, we have notified SE that we'll be opting out of the hat fest. The poll is now closed.