1. An image processing system comprising: an I/O configured to communicate an image and image tags over a communication network; an image ranker configured to determine a priority for tagging the image; destination logic configured to determine a destination to send the image to, for a manual review of the image by a human reviewer; image posting logic configured to post the image to the destination; review logic configured to receive the manual review of the image from the destination, the manual review including one or more image tags characterizing contents of the image; memory configured to store the one or more image tags in a data structure; and a microprocessor configured to execute at least the image ranker.