|Answer added on 10-8-2011: Flixter|
Hint: Its a social movie site acquired by Warner Bros
Flixster is a social movie site allowing users to share movie ratings, discover new movies, and meet others with similar taste in movies. The site is based in San Francisco, California and was founded by Joe Greenstein and Saran Chari in 2007.
Flixster has been the parent of website Rotten Tomatoes since January 2010.
Flixster including Rotten Tomatoes was acquired by Warner Bros. on May 4, 2011.