You know not all traffic is created equal. What good is it to have tons of traffic that comes, looks and leaves, never to be seen by you again? When building your link strategy, think about the affinity your site has with those you want linking to you. At the end of the day, you want traffic to convert to subs, sales, or to view ads on your site. If you have low-rent traffic, the ad sales will be nominal, the sales will be sparse and cheap, and the subs to your list will eventually wind up not converting to any meaningful degree. Link building is like building a network of pipes into your site. Be sure you set that network up to feed a high-quality flow of visitors to you. In short, think about the back end before you set up the front end.