1. A computer implemented method for managing a set of serially presented items, the computer implemented method comprising: responsive to a user selection of a given item, displaying a content for the given item for an amount of time based on user input; identifying a dwell value for the given item based on a dwell time for the given item and a timing profile, wherein the dwell time is the amount of time the content for the given item is displayed; and responsive to a determination that the dwell value for the item is less than a dwell threshold, removing the item from a plurality of content items.