1. A system that facilitates data searching, comprising: a computing device associated with one or more processors and one or more computer-storage media; a data store coupled with the computing device; a source component that includes data representative of at least one of a website and a blog a site that is searched, wherein the source component stores the data in the form of a file that specifies the at least one of the website and the blog site that is searched, and wherein the file includes a single favorites list, multiple favorites lists, a blogroll, and a pointer to an XML file or an OPML (outline processor markup language) file; and a search component that processes the data to restrict or bias a search based in part on the data, and that restricts the search to content of the website or blog site that is specified by the file and other sites or favorite lists linked to the website or blog site that is specified by the file, and wherein a source of a search destination is determined based upon a user login, such that a user logs-in to a system and defines a query, and the source of the search destination is automatically specified based on user login information, wherein the search component performs a second search if results of the search are determined to be inadequate based on predetermined criteria including a number of the results returned, type of the results returned, and source of the results returned, and wherein the second search is restricted to content of a second specified website or a second specified blog site that is different than the specified website or blog site.