Official site for the gay romantic comedy from Taiwanese director Chen Yin-jung, about a 17-year-old guy in the big city for the first time who falls in with Bai, the biggest playboy in Taipei. In Chinese.
Wikipedia: Formula 17
Contains a hyperlinked synopsis of the movie, with a cast list and related links.
IMDb: Shi Qi Sui De Tian Kong
Features a cast overview for Formula 17, as well as user and external reviews, nominations, and other production details.