1. A non-transitory computer-readable storage medium comprising program code for causing a computer to perform a method for creating a user community consensus of the relevance of a metadata tag to a content item, the method comprising: receiving a metadata tag submitted by a first user of the user community the metadata tag describing an associated content item; receiving a plurality of relevance ratings of the metadata tag submitted by the first user from other users of the user community, the metadata tag relevance ratings each rating the relevance of the metadata tag as pertaining to the associated content item, each user having a respective rating weight that determines the weight afforded to ratings of the user relative to other users in the user community; weighting the relevance ratings submitted by the users relative to one another based on the respective rating weights of the users; calculating an average relevance rating of the metadata tag using the weighted relevance ratings; and storing the relevance ratings and the average relevance rating of the metadata tag.