Dumb business move of the day: Pissing off your fan base. According to this Slashdot post,

"What happens when a film studio and a fanbase get into bed? Fans of Joss Whedon's Firefly, and the movie by Universal Studios -- Serenity -- are not amused. After being encouraged to viral market Serenity, the studio has started legal action against fans (demanding $9000 in retroactive licensing fees in one case and demanding fan promotion stop), and going after Cafepress. The fans response? Retroactively invoice Universal for their services."

As Glenn Reynolds pointed out, this violates Rule #1 of the internet:

"Don't annoy someone who has more spare time than you do."