9. A method for indexing web pages, the method comprising: crawling, by a computer, a plurality of web pages on a wide area network, each web page having text content and at least one image having an embedded spatial key; for each of the crawled web pages: extracting the spatial key from the image; and storing an association between the text content and the spatial key on a computer readable medium without geocoding the text content.
14. The method of claim 9 wherein the at least one image includes steganographically encoded rating data and further comprising storing an association between the text content and the encoded data.