Note: See robjohn's answer below for the surprising result.
Thanks to everyone for voicing their opinions!
As the year draws to a close, the Stack Exchange network is planning another Winter Bash.
Some Details
Winter Bash is an annual event that can run on any Stack Exchange site that chooses to participate. Users earn “hats” for their gravatars by completing certain tasks (analogous to badges). Certain actions trigger the user receiving a hat, which their gravatar can “wear”.
This event will run from 16 December 2013 to 3 January 2014. Users will be able to see their entire hat collection at http://winterbash2013.stackexchange.com. That site will also have a landing page, explaining the rules and other details of the event.
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.
At the end of the event, all hats will go back into storage.
The only visual change to the Stack Exchange sites themselves will be the presence of the hats and the “I hate hats” button in the footer.
In the past, math.SE has not opted to join this event. This year we want to get input from the community. Just vote on whether you wish math.SE to participate in this event, and $$\huge\color{#000000}{\textbf{please do not downvote these answers.}}$$
We have until 1 December 2013 to inform the Stack Exchange team whether we wish to participate (otherwise they will assume we don't).