It,s proven method because 2 of my website ranking have been drop from top 10 it was top 10 from about 6 month. now, both the sites are not even visible in 500 some what. It,s more then 2 month there is no change in my ranking position. 1 site have a position of 527 and second one around 436. Now, tell you the way just use prstrom for 12 hr. You will see it,s reaction. i m 100% sure. This tool is not for gaining ranking but this tool is for droping ranking.