When a user conducts a search for content using one or more of the many search engines known in the art, embodiments of the present invention may receive results returned to the user's browser by the search engine, and may then proceed to filter, organize, modify, or enhance those results and/or their presentation by performing various editing and/or presentation operations on the search results, based on information relating to the user's prior interactions with the search results and the user's interests and preferences. Search results may also be modulated based on information about the way other users have responded to or interacted with each of the search results in the past.