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Hi The report shows that I have 404 errors in the about of almost 300   but they appear to me to be active and part of the site.   ??? Examples: NOTE: warning -   these pages discuss BDSM and have some nude images here are some on the list http://bestslavetraining.com/groups/discipline-and-punishment/?acpage=6 http://bestslavetraining.com/groups/general-b-d-s-m/?acpage=13 also here is one that does not work http://bestslavetraining.com/activity/activity/ WHY does it show 404 errors for urls that work???   what am I missing and what in the world am I to correct if they appear on the SEOmoz  error log.???