ChaCha has launched a new MMS service for movie trailers, coupon images, rich media ads, and other video content to "virtually all phones". The service works on even the 75% of US mobile phones that aren't smartphones, the company says. Known as an answers service, ChaCha will begin serving MMS ads to its users (ChaCha claims 15 million active monthly uniques). As mobile marketing becomes increasingly important, this might appeal to a range of advertisers.