Hey guys, I bought an article off a PR8 site and it has an almost 100 DA for a crapload of money. However the article with my link is a PR N/A. Does that mean that link is useless and I just wasted a bunch of money? I am thinking about buying another contextual link, this time it's a PR7 with a DA of 90 but looking at the articles on the site they are all PR n/a. Is this kind of linkbuilding useless?