A DigitalPoint Forum thread asks, Is Aiming For Repeat Visitors A Waste Of Time For Adsense Sites?
Many people argue in the thread for both sides. Some say that since repeat visitors are used to your site, they have higher ad blindness then new visitors. Some say that you want the repeat visitors because they increase your ad impressions. Some say new visitors lead to repeat visitors, and repeat visitors lead to more word of mouth for new visitors to become repeat visitors.
I would think every site wants a loyal base of repeat visitors. It keeps a site healthy and going, in my opinion. It is the repeat visitors that increase the popularity of the site, to drive new visitors. In my opinion, the new visitors are more likely to click the ads then the repeat visitors, but the repeat visitors and new visitors work hand in hand.
Forum discussion at DigitalPoint Forums.