Abstract: A system and method for providing Web search results to a particular computer user based on the popularity of the search results with other computer users is described. One embodiment monitors, using one or more servers, at least one Web service for new actions of sharing of Web content by computer users; identifies, from the new actions of sharing of Web content by computer users, a data item that satisfies predetermined interestingness criteria; parses the data item to obtain at least one Uniform Resource Locator (URL); crawls at least one Web page corresponding to the at least one URL to obtain the content of the at least one Web page; analyzes the content of the at least one Web page; and updates an index based on the content of the at least one Web page, the index being usable in processing a Web search query from a particular user.