I can't cancel it, because I don't subscribe to it in the first place.
I think letter to the Viacom CEO telling him that we will boycott all businesses owned by Viacom would be effective.
They didn't have an e-mail address for him on the website though, but they must have a physical location, where one can send regular mail.
Sumner M. Redstone - Chairman & CEO
Mel Karmazin - President & COO
VIACOM
1515 Broadway
New York, NY 10036
(212) 258-6000
And look at all the businesses they own.