I just improved my Bulk Google pagerank & backlinks checker tool here: http://www.bulkseotools.com/bulk-check-pagerank.php - I hope you will like this tool. It can handle 500 Urls at once. New feature display backlinks will help you detect the fake pagerank. If you find a domain has good pagerank but backlinks = 0, then you can think the pagerank maybe fake/invalid. Let me know what you think.
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