If this comes so highly recommended, do you mind that I ask what this service is exactly? Are you talking about allowing links in your signature? I figure those have a rel="nofollow" Yes, yes, its a peon question. I'm a peon. Please get straight to the flaming or answering the question.
He is talking about the co-op ad network. (aff link.) Basically you put adverts on a site you own and it will give you a weight. Your weight is determined by the number of ads you show, PageRank and number of indexed pages. You then create adverts that can be shown thounsands of times, search engines will pick this up and suddenly your backlinks will increase