"Send a brick" is astroturf!!
It was Astroturf.
Have you ever noticed how all the astroturf groups are on the right? My favorite astroturf organization, The Greening Earth Society, a group which for a long time promoted global warming as beneficial (longer growing seasons, better farming to the north, remember that?) has disappeared from the web for the last six months.
In recent years, they've shifted their message to be just another global warming denial group. (They're funded almost exclusively by the Western Fuels Association which represents coal power plants.)