Really?

An email from Amazon.com that I have a hard time believing (despite Robert Greenwald having directed both films):

Dear Amazon.com Customer,

We’ve noticed that customers who have purchased or rated “Outfoxed – Rupert Murdoch’s War on Journalism” or other films in the ( G ) > Greenwald, Robert category have also purchased “Xanadu – Magical Musical Edition (With Complete Soundtrack CD)” on DVD.

What about Flatbed Annie & Sweetiepie: Lady Truckers?