22. The method of claim 17 , further comprising: receiving said URL for said web page; parsing at least one of said URL and said content of said web page; and based on said parsing, generating said document feature vector of said URL or of said content of said web page.
22. The method of claim 17 , further comprising: receiving said URL for said web page; parsing at least one of said URL and said content of said web page; and based on said parsing, generating said document feature vector of said URL or of said content of said web page. 27. The method of claim 22 , wherein said generating said document feature vector comprising generating said document feature vector of said content of said web page by accessing said web page and using machine learning to extract information from said content of said web page.