E-commerce Gone Mad

I’m not a big fan of Dan Brown, but I am fascinated by the marketing hype surrounding the book and now the film.
Although the film was only released in the last couple of weeks I’ve already received marketing for the DVD!
A little mad really, but that is the power of ecommerce I guess. No sooner is the film released than the release date for the DVD is announced and the preorders start to roll in.