Here’s a good, concise, and yet very thorough piece by Hollywood Reporter columnist Anne Thompson about the selling of Al Gore, Laurie David, Lawrence Bender and David Guggenheim‘s An Inconvenient Truth.

Davis Guggenhiem (left, horn-rimmed glasses) and Al Gore plugging An Inconvenient Truth at last January’s Sundance Film Festival. (mpRm publicist Michael Lawson stands at far right)