Google has lately filed a patent which details many points that Google uses to rank web pages. The title of patent is "Information retrieval based on historical data" and it confirms the existence of Google sandbox and that it can apply to all web pages.
The patent specification revealed loads of information about possible methods Google may use your web page changes for determining the ranking of your website. Apart from web page content; ranking of web pages is influenced by the frequency of page or website updates as well. Google measures content changes for determining how fresh or how stale a web page is. This does not mean that it is always worthwhile to regularly change the content of your webpages. Google exclaims that stale results may be desirable for information which does not need updating while fresh content is good for results which need it.
The patent specification revealed loads of information about possible methods Google may use your web page changes for determining the ranking of your website. Apart from web page content; ranking of web pages is influenced by the frequency of page or website updates as well. Google measures content changes for determining how fresh or how stale a web page is. This does not mean that it is always worthwhile to regularly change the content of your webpages. Google exclaims that stale results may be desirable for information which does not need updating while fresh content is good for results which need it.

