In some embodiments, a method can comprise analyzing user interaction with one or more items. In some embodiments, analyzing user interaction with the one or more items can comprise determining a number of impressions for each item of the one or more items. In many embodiments, the method can further comprise determining at least one undiscovered item of the one or more items based at least in part on the analyzing user interaction with the one or more items, estimating a performance of the at least one undiscovered item of the one or more items, promoting the at least one undiscovered item of the one or more items based at least in part on the estimating the performance of the at least one undiscovered item of the one or more items. Other embodiments of related methods and systems are also provided.