Twitter and Facebook also censor profiles and comments. A friend of mine got his FB account deleted because he uploaded pictures of his sculptures, which mostly featured naked people, on a daily basis.
Facebook reason was that it was considered child pornography because one picture he uploaded was a fountain containing child taking a bath with his family (there was nothing sexual in the picture beside the fact that every statue in the scene was naked beause, you know, nobody uses clothes to take a bath).

At least Steemit allows free speech and nobody can censor it.