A private site has the right to determine what content it will post. It's making the guidelines clear to all so there will be no misunderstanding. I have no problem with that, and don't see it as a sign of a new Stalinization of Russia. This is simply a private site that is announcing that it wishes to avoid controversy.
This is typical propaganda and hatemongering of TTS and his ilk. They count on Americans being to dumb to catch them. Well they count wrongly, just like the DU and the Euros and the Islamics. Wonder which of the 3 they fall into?