I have a website besthyipmonitor.info I moved from expression engine to the vbulletin the error I am facing is the previous links to the the blog entries are alive. see http://www.besthyipmonitor.info/ind...yip-high-yield-investment-progrms-reliablity/ The page is alive with the URLS to forums and subforums all wrong resulting in 404 erros. even if it is alive I might have duplicate content penalty Can anyone tell me how to overcome this error and removing all old urls from google database. somebody told about 301 redirects I don't know how to do this in vbulletin or in such condition.