13. A machine-readable hardware storage device containing instructions that, when executed by a processor of a context machine, cause the machine to perform operations comprising: accessing data identifying a context in relation to a category of merchant offerings in a network-based marketplace, the context being associated with a user of the network; processing information from a plurality of other users of the network regarding the category of merchant offerings to determine attributes relevant to the context; receiving input from the user including a selection of at least one of the attributes; and generating result data by retrieving data associated with the context and filtering the retrieved data according to the at least one selected attribute and according to one of one or more ratings associated with buyers or sellers of products or services included in the result data.
13. A machine-readable hardware storage device containing instructions that, when executed by a processor of a context machine, cause the machine to perform operations comprising: accessing data identifying a context in relation to a category of merchant offerings in a network-based marketplace, the context being associated with a user of the network; processing information from a plurality of other users of the network regarding the category of merchant offerings to determine attributes relevant to the context; receiving input from the user including a selection of at least one of the attributes; and generating result data by retrieving data associated with the context and filtering the retrieved data according to the at least one selected attribute and according to one of one or more ratings associated with buyers or sellers of products or services included in the result data. 17. The machine-readable hardware storage device of claim 13 , the operations further comprising: accessing an advertisement from a third party pertaining to the context and provide the advertisement to a user interface of the user.