The add-on is used as an extension for the site http://www.seohand.com. It activates when the working area of the site in the location bar. The area gives to user opportunity to identify Google ranking for his sites. This operation does this add-on.
Being called it performs request to Google server for obtain PageRank, Backlinks, Saturation, identify placement of your site at Google and Yahoo for any keyword.
NOTE: All obtained data will go from a client to the SEOHAND site over AJAX based protocol.