Patent ID: 8751510

Claim:
A method of identifying a cohort of users attempting to orchestrate preference events for content items, at a preference system for presenting the content items to users, the method comprising: receiving from a plurality of users preference events regarding multiple content items; and for at least one of the plurality of users, operating a processor to: identify a set of content items for which the user initiated preference events of a first type; for each of the identified content items, identify other users in the plurality of users, if any, that initiated preference events of the first type for the content item; and if multiple users amounting to at least a first percentage of users in the plurality of users initiated preference events of the first type for a subset of content items amounting to at least a second percentage of the set of content items: record the multiple users as a cohort; and reduce effects of the preference events initiated by the cohort when determining statuses to assign the subset of content items.