We have had some great success remarketing (or retargeting) using Fetchback.We have been approached by Google Adwords to use their remarketing. I can test them on a second site but I was wondering if there would be a problem having them retarget the same site for testing or long term. We currently run traditional PPC on Adwords, YSM and Bing and they each do well but seem to reach different audiences. With remarketing I suspect they might end up bidding on the same inventory so pricing could be driven up. Any insights are appreciated.