From the analysis of the code behind Google's patents: "Google's sweeping changes confirm the search giant has launched a full out assault against artificial link inflation & declared war against search engine spam in a continuing effort to provide the best search service in the world... and if you thought you cracked the Google Code and had Google all figured out ... guess again. ... In addition to evaluating and scoring web page content, the ranking of web pages are admittedly still influenced by the frequency of page or site updates. What's new and interesting is what Google takes into account in determining the freshness of a web page."