1. A method of evaluating an electronic document in connection with a search, said method comprising: determining a first confidence level of an electronic document, said electronic document being retrievable by a search engine in response to a search request from a user, said first confidence level indicating a likelihood that the electronic document is undesirable based on information provided by a source external to the search engine; determining a second confidence level of the electronic document, said second confidence level indicating a likelihood that the electronic document is unsatisfactory with respect to the search request based on one or more attributes of the electronic document; generating a rating for the electronic document as a function of the determined first confidence level and the determined second confidence level; and designating the electronic document as unsatisfactory in connection with the search request based on the generated rating of the electronic document.