Patent ID: 8898164

Claim:
A computer-implemented method comprising: characterizing multiple items of content accessed over a network, each item of content associated with a content identifier and characterized with a set of multiple depersonalized keywords, the set comprising words submitted to an online search engine by a population comprising multiple entities in the past to locate the content; receiving, at a keyword mapping system, a consumption history off an individual entity, the consumption history comprising at least two different content identifiers, each content identifier associated with a respective item of content accessed over the network by the individual entity; recording a protected consumption history of the individual entity in a data store at the keyword mapping system, each content identifier of the consumption history represented in the protected consumption history by the respective characteristic set of multiple depersonalized keywords associated with the content identifier's item of content; discarding the content identifiers of the consumption history; receiving a list of specified keywords; determining a frequency of each specified keyword in the depersonalized keywords of the individual entity's protected consumption history; and assessing the suitability of the individual entity for receiving selected content based on the frequencies.