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Hi, I just used the compain tool to look for errors on my site and it appears that seomoz crawler finds 18 404 errors on pages that are fine in my good. I do proceed with a URL rewritting on those pages, but navigation is fine. Some of the pages are: http://cassplumbingtampabay.com/about-us http://cassplumbingtampabay.com/commercial-services http://cassplumbingtampabay.com/drain-cleaning-repair ... Does anybody know what's going on?