Un articol recomandat celor ce vand linkuri: http://www.textlinkbrokers.com/articles/sell-links-mistakes.htm (The Five Biggest Mistakes that Webmasters Make When Selling Links on and The Easiest Ways to Get a Pagerank Block).
La http://www.blockedpr.com/ regasiti o lista cu site-urile al caror PR a fost blocat din acest motiv, siteuri printre care se numara Bravenet si Hotscripts...
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