Rank and Comment Google Result

I have notice a cool feature with Google during this weekend. When I Google something for example 'CrazzyCool' using Google Chrome browser result allow me to rank the result I am getting plus adding public comments. Using the arrows next to the result you can move it up or down.

Still I am not sure impact onactual Google Page Ranking and this, but I am sure this is another beta testing Google is trying out with Google. You will not see this feature in FireFox or Internet Explorer.