i do have to say rather strangely since august i saw a sudden jump in impressions  from about 660 - 680 k to their usual 840 - 860 k , sales have also picked up by 25 % in that period . while it is still at about 3/5 th of what it was at the end of last year before it went downhill . i can't really say my stock has changed that much so i'm just wondering what made the algorithm change .