Architecture that allows a user to search for content or to restrict an online search to a limited number of websites and/or blog sites. Architecture is provided that facilitates data searching via a source component that includes data representative of a website or a blog, and a search component that processes the data to restrict or bias a query based in part on the data. The source component can include one or more of a favorites list, a blogroll, a pointer to an XML file, or a pointer to an OPML (outline processor markup language) file to specify a list of sites or blogs which they frequent. The search component processes a search query and restricts or biases the search by specifying a list of sites or blogs which are contained in the data of the source component, for example, the favorites list, the pointer to an XML file, the pointer to an OPML file, and the blogroll.