6. A system comprising: at least one computing device comprising a memory to store instructions and further comprising one or more processors to execute the instructions to: receive a search query from a search user; classify the search query into at least one query-class from a plurality of query-classes; perform a search using the search query over a plurality of non-trust data sources to obtain a plurality of non-trust search results; selectively perform another search using the search query over a plurality identified trust data sources to obtain a plurality of trust search results, wherein the identified trust data sources include explicit trusted data sources that are trusted specifically by the search user and wherein the non-trust data sources are non-trusted specifically by the search user; categorize the plurality of trust search results based on the search user's respective relationship with each identified trust data source, the search user's respective relationship being one from a group of relationships comprising an explicit trust data source relationship, an implicit trust data source relationship, and another trust data source relationship having a correspondence with a social networking source for which the search user is not a member; determine, based on the at least one query-class for the search query and the trust search results categorization, a number and a position for selectively displaying each of the plurality of trust search results in a rank order; and selectively display the plurality of trust search results distinct from a display of the plurality of non-trust search results, wherein the selectively displayed plurality of trust search results is in accordance with the determination and includes display of information indicating an identified trust data source of each of plurality of trust search results.
7. The system of claim 6 , wherein the plurality of query-classes include at least one of a factual query-class, a reviews query-class, and an activity query-class, and wherein, if it is determined that the search query is a factual query-class, inhibiting display of trust search results.