Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
According to this post on meta.math, there will be hats again this year. This time, it will be for all SE sites that don't opt out. There's an informal poll on chat about having hats again this year.
(I want hats. Yay! hats.)