<prompt> Translate the following text to EnglishUelekezaji wa lengo unaweza kuongeza kile watangazaji watatumia kwa kila jicho, lakini pia hupunguza idadi ya jicho wanalolazimika kulipa.  <response>: Targeting may increase what advertisers will spend per eyeball, but it also reduces the number of eyeballs they have to pay for. 