True enough. There have been numerous articles on just that. In fact, that's where I first heard of Anthony Watts. He was challenging the temperatures reported by weather stations where the local environment had changed (eg, paving or nearby structures added) which caused the reported temperature to increase.
I am no expert on global warming, but I do try to make sure that my friends and acquaintances are made aware of such developments, as well as the ClimateGate revelations. The MSM isn't going to tell the public about information which would cause doubt that global warming was occurring or that it was man made. So, we have to bypass the MSM, making them more and more irrelevant.
If the public remains ignorant, it will be because people like us, who have read the information, have failed to point our friends to the places on the internet where they can read it themselves.