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The SEO Moz crawler has found a number of 500 error pages, and 404s etc which is very useful

however some of the urls are weird/broken formats we don't recognise and nobody remembers ever using - not weird enough to imply hacking, but something broken in the CMS

Is there anyway to find out where the crawler found these urls? I can patch up and redirect the end result as best I can but I would prefer to fix plug the leak

thanks

hehe can I take the fifth?  Seriously though, the new stuff will be closer to gold than crap I think (plus moz reports give us a lot of As) but even hypothetically if it were crap, would 50 tonnes of crap do worse than 5? Or does the stopped clock being correct twice a day come into play?