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Thanks for the reply. My site is www.atcsolutions.com/ and the site we have an ad with is http://www.lowtax.net/ which is a PR5 site but I'm worried by the ammount of advertising they have added. I went away for christmas and when I came back we had recived 10,000 links from them. We didn't buy links from them but we do advertise with them and when I was gone another guy I work with arranged it with them and I didn't relise we were getting follow links untill I returned. Say it is them. What should I do? ask for the link to be changed to a no follow and hope that sorts it? take down all links and ads? Im just not sure but if it is them I need to act fast.