Google's Site Exclusion tool, which allows for the exclusion of advertisings from showing up on particular sites or sections of sites, has been expanded. Now Adwords advertisers can exclude an unlimited number of sites which should help improve ROI and according to the Inside Adwords Blog refine your targeting across the network. Google is suggesting that advertisers review sites carefully before deciding to exclude it from their campaign as hasty exclusions may result in missing out on potential customers.

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