Google Toolbar

If you use Internet Explorer, you can get an idea of what Google thinks of how important your site is in general, by downloading the Google Toolbar. The latter is an ActiveX control that installs into IE, and shows the Page Rank of any page that you visit. The toolbar can be obtained from http://toolbar.google.com/

Unfortunately, to obtain the page rank of the pages you visit, the toolbar actually transmits information about the pages you visit to Google. Thus if you are worried about people tracking your Internet activity, you might want to restrict its use to times when you check your site's ranking.