Embodiments of the present invention provide methods and systems for assigning a “karma” to users of a social network. In some embodiments, the karma is a score that is based on various reputations and feedback on a user. For example, reputation or feedback scores given to user in general are collected. In addition, karma is based on scores collected by analyzing feedback provided between two users. Thus, a reputation score for one from the point of view of the others may be calculated. Embodiments of the present invention provide an open interface (API) that allows users to submit their reputation scores.