Here is the response from Autozone:
Dear valued customer:
Thank you for contacting AutoZone regarding your advertising concerns. AutoZone does not purchase advertising on Rush Limbaugh websites, or sponsor the Rush Limbaugh radio show.
If a commercial did run, it was an error. Again, thank you for taking the time to contact us. We value your comments and appreciate you as a customer.
Respectfully,
Brenda Hudson
Marketing Director, Media
Customer Satisfaction
Pro Flowers & eHarmony are considering dropping ads on Rush being pressured by groups like this...
George Soros front group...
http://thinkprogress.org/media/2012/03/02/436852/rush-limbaugh-advertisers/
ThinkProgress is an American political blog edited by Faiz Shakir that “provide[s] a forum that advances progressive ideas and policies”. It is an outlet of the Center for American Progress.
Columnists
Alyssa Rosenberg
Alyssa Rosenberg is a contributor to The Atlantic and The Washington Monthly, and writes on culture for ThinkProgress.
Affiliated with Center for Ameican Progress
Its President and Chief Executive Officer is Neera Tanden, a veteran of the Obama and Clinton administrations and Hillary Rodham Clinton’s campaigns. Its first President and Chief Executive Officer was John Podesta, who served as chief of staff to then U.S. President Bill Clinton. Podesta remains with the organization as Chairman of the Board.