A virtual universe system has a system and method for identifying spam avatars based upon the avatar's behavior characteristics through the use of Turing tests. The system may provide a Turing test unit for performing Turing tests and an analysis unit that compares the behavior characteristics of new or newly changed avatars against the behavior characteristics of known spam avatars to determine if the avatar has known spam avatar characteristics. It may further have a scoring system to calculate a spam score based upon similarities of the comparison and identifying the avatar as a spam avatar based upon the calculated spam score. It may further compare the calculated spam score with a spam score threshold wherein the avatar is identified as a spam avatar if the calculated spam score is equal to or greater than the calculated spam score.