1. A method for assessing user interest scores of users of mobile network, the method comprising: for each of a plurality of users, determining initial interest scores corresponding to user's interests and interest scores of friends of the user for the user's interests, based on browsing information, and assessing user's interest scores based on the initial interest scores, the interest scores of the friends and friends' influence; and outputting a list including a subset of the users selected based on the user's interest scores.