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I have a competitor who has the following Linking Root Domains numbers on the Linking Domains tab and was wondering if some one could explain what the numbers mean? opera.com - 205,515
dmoz.org - 97,752 prweb.com - 198,092 quantcast.com - 115,748 tinyurl.com - 443,540 jquery.com - 57,886 URL: http://www.opensiteexplorer.org/domains?site=www.verypdf.com%2F Thanks, Brad