the point is that my site uses a single page name and #xyz to show different content (but really they are different pages), a lot of sites do this now in order to avoid reloading and displaying content faster. but the problem indeed is that this page has a unique meta data right now. these are really different pages, but they are all under a single php file. for example gmail does this too: https://mail.google.com/mail/u/0/?shva=1#inbox