Tries both to be a smart dialogue driven film and something easy ("Bosnia. They don't have roads, but they have Facebook.") for those interested in "that Facebook movie", which isn't easy to combine. Some good dialogues and a major achievement for Jesse Eisenberg, but far from Fincher's best, even among the post 2000-movies. How's that next thriller developing?
Weak, stereotype and non-coherent, but Brad Pitt and a large budget saves the day (literary). Nowhere near "28 Days Later", "Contagion" or the "Dawn of the Dead" remake though, from which it shamelessly steals and copies. Haven't read the book, and neither have the screenplay writers, probably.