1. A computer-implemented method for determining face similarity, the method comprising: identifying a person from an image associated with an account of a user of a social network; identifying at least one of text or metadata associated with the image by the social network; determining one or more or more classifications corresponding to an ethnicity, a gender or an age classification of the person in the image, using the at least one of text and metadata; in response to the user initiating a search for other users of the social network, performing a similarity search using the person of the image, in order to identify images of other persons that are similar in appearance to the person in the image and that share the one or more classifications of the person in the image; and providing, to the user, a search result based on at least one identified image from the similarity search.