From today, Google DNS responses changed by Turkish government to effectively ban YouTube and Twitter even it's contrary to our constitution. %90 of people in Turkey using Google's Public DNS

Example intercepted response: dig youtube.com @8.8.8.8 youtube.com. 86287 IN A 195.175.254.2

195.175.254.2 is the telecoms authority's IP..

Currently, they forgot to intercept OpenDNS.

edit: they started intercepting OpenDNS too..