????1??22????????????軔?????“?????”(Bad Ads)????????“??????????”(Better Ads)?????????????????????????б?
???????????????2015???У???????????????1000???????????????????Χ????????7.8????????棬??????2014???5.24??????2013???3.5??????
????2015??????????????????????????????????????ж??????2.5??????????????Я??????棬???д???????????????Υ?????????????λ?ù???????????????????????????????????????????????????????10?????????Щ??????????????????ν“?????”?????????
????????????????ù??????????Χ??????????????ú?????140?????????????
???????????????1?·?????????(Sridhar Ramaswamy)????ù??δ??????????渶?????????????“???????????????????Ч???????????????????μ??????????????”??