Yes, I know about it. BTW, as a result of this takeover "Эхо Москвы" which critisize Kremlin quite hard now belongs to the state owned company Gazprom. So, this is a way more tricky than you might think.
I mostly believe in self censorship - do not touch "dangerous" subjects etc. This is a main force behind censorship rather than directives from some dedicated goverment department.