Flixster just announced that it has acquired Rotten Tomatoes, the popular movie review site, from IGN Entertainment. IGN is a division of Rupert Murdoch's News Corporation. Flixster is one of the world's most popular movie communities and currently features about 2.3 billion user ratings and reviews from its users. Rumors about this acquisition first surfaced in late December, when Kara Swisher first reported that a potential acquisition of Flixster by MySpace would hinge upon a merger of Rotten Tomatoes and Flixster. Sponsor The financial terms of the acquisition were not disclosed. A Natural Fit Combining Flixster's user-generated reviews and Rotten Tomatoes, which aggregates reviews from top movie critics, seems like a natural fit. Flixster also has a strong presence on social networks through its Facebook and MySpace apps. Even before this acquisition, Flixster and Rotten Tomatoes already partnered in some key areas.