A computer-implemented method for monetizing future location of users includes identifying indicator(s) retrieved from log data or an electronic declaration that indicate a possibility that a user will be at a specific location in the future; generating a probability that the user will be at the specific location in the future based on the indicator(s); and charging an advertiser a cost for an impression to which to serve a location-specific advertisement targeted to the user, the cost charged being greater when the probability is greater that the user will be at the specific location in the future. The method may be extended to targeting a group of users that expect to be at the same location at the future point in time. Monetization of future locations may depend on the quality and/or quantity of the log data and declarations of future locations and on a number of users in a group of users if monetized according to the group.