"Hi Tac, yeah, you are correct, those are recommendations done to end-users, not 'applied' recommendations. Something like "total number of search results displayed to users". As for second question, the measure we follow is number of recommendations that get 'applied' compared to all recommendations we make. That measure is between 1 in 1000 to 1 in 50, depending on position, recommendation type and site recommended. btw: happy 2012 !" - Andraž Tori