Drop a comment under this post, stating the different categories of programmers on codeforces. Here, I'll start:

1. The ones who solve problems
2. The ones who build mobile and web apps for group 1.
3. The ones who post blogs about cheaters xD
4. The ones who ask how to become red on codeforces
5. The one posts a blog about types of coders on codeforces

Continue the list

P.S. This is just for fun, don't take it too seriously :)