Review: none-too-original premise 
Sentiment: negative

Review: succeeds in making us believe 
Sentiment: positive

Review: take the warning literally , and log on to something more user-friendly 
Sentiment: negative

Review: the movie barely makes sense , with its unbelievable naïveté and arbitrary flashbacks . 
Sentiment: negative


Review: cal is an unpleasantly shallow and immature character with whom to spend 110 claustrophobic minutes .