This is my "flair" from Stack Exchange. Stack Exchange is a site with many subsites where users ask questions and also answer questions. The icons on my flair mean that I have received over 200 reputation on those sites.
The first one - Stack Overflow. It's all about programming. That is my highest rated stack site.
The second - The Workplace. It's about professionalism in the workplace.
The third - Science Fiction and Fantasy. It's pretty obvious why this one is up there.
The fourth - Area 51. This is where you propose sites to become official Stack Exchange sites.
The fifth - Mathematics. I do alot of math. I might as well help people while I'm at it, right?
The sixth - The Arqade. This is a Q&A about video games.
The seventh - Beer. Another obvious one.