I also wrote of my disappointment to Walmart. Here was their reply:
Thank you for your inquiry. We continuously review our media plans. In keeping with our internal guidelines to avoid content that is highly polarizing, we've instructed our agencies, as of August 3rd, not to run Walmart advertising in news commentary shows on national cable networks. This would include the Glenn Beck Show.
Thank you, Walmart Customer Care
This would actually seem more positive than not. If taken at their word, then anything on CNN or MSNBC was pulled as well, which given the other's smaller audience pull probably impacts them much harder.
Hello COMRADE! Hmmmmmmm has anyone checked to see if their advertising is no long on CNN and MSNBC?