Moving on to traffic sources, different sites, even ones focused on the same topic, can have dramatically different referral mixes. Some may get high amounts of search-referred traffic, or have dedicated readers coming to them directly, while others thrive on referral traffic from other sites. Generally, search-referred traffic performs the best in terms of ad-clicking behavior, followed by traffic coming from outside websites. These users have come to the site often not knowing precisely what they’re looking for, making a relevant ad all the more attractive. So how can you beef up these more valuable traffic sources?