Forum Question: “Best practice for SharePoint vanity url/redirection”
http://stackoverflow.com/questions/1201180/best-practice-for-sharepoint-vanity-url-redirection
Redirection options in SharePoint
SharePoint URL Shortener (Commercial App)
SharePoint Smart 404 Feature (Free App)
http://sharepointsmart404.codeplex.com/ Install instructions for SP Smart 404 Feature http://sharepointsmart404.codeplex.com/Thread/View.aspx?ThreadId=65515