I have used them before for customer sites, it works ok but is really a temporary thing until you get that customer to rank better on keywords that they want an

I have used them before for customer sites, it works ok but is really a temporary thing until you get that customer to rank better on keywords that they want and increase the pagerank through normal methods. As a temporary shortcut text-link-ads has worked out ok for me. They were at one point penalized but they changed their system around so that won't easily happen again.