We constantly receive messages from our readers that FORUM.msk is not available in this or that region, in this or that subnet, it "can't be opened" and so on. Certainly, we have already suspected authorities of Internet content filtration, of artificial restriction of possibilities of opposition to function in information field (citizens - to receive and spread freely information as chapter 29 of the Constitution of the Russian Federation guarantees). Though that were only guesses. Now we have material evidence on hand. Principals of the Tyumen schools received "charming letter" the day before the beginning of a new academic year.