Inboxes the world over were bombarded with Hulu announcements from the company’s upfront presentation in New York this week, as the streaming service celebrated surpassing 20 million subscribers in the US by rewarding viewers with new features and treating itself to some fancy new dynamic ad insertion (DAI) technology. Hulu is also changing the content recommendations game, introducing a new stop suggesting content feature in the UI, nearly five months after its initial demo. Hulu uses an in-house recommendation engine based on technology from California-based content metadata company the Video Genome Project, which it owns, and according to subscriber feedback, the recommendations are regularly inaccurate. The move is surprising because Hulu has revealed more about its recommendations technology than most…