I just found this paper in my school's library. Its not new and it looks like google + yahoo + msn have maybe given up on trying to find 'DUST' because they now

I just found this paper in my school's library. Its not new and it looks like google + yahoo + msn have maybe given up on trying to find 'DUST' because they now let you do that ( http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html http://googlewebmastercentral.blogspot.com/2009/02/specify-y... , http://ysearchblog.com/2009/02/12/fighting-duplication-adding-more-arrows-to-your-quiver/ http://ysearchblog.com/2009/02/12/fighting-duplication-addin... , http://blogs.msdn.com/webmaster/archive/2009/02/12/partnering-to-help-solve-duplicate-content-issues.aspx http://blogs.msdn.com/webmaster/archive/2009/02/12/partnerin... ) Its still interesting that 1. Many sites have a lot of 'DUST' 2. It is not very hard to find the 'DUST'- which obviously reduces crawling time.