Rev=canonical: url shortening that doesn't hurt the internet(revcanonical.appspot.com)3 ポイント·投稿者 markup·17 年前·1 コメントrevcanonical.appspot.comRev=canonical: url shortening that doesn't hurt the internethttp://revcanonical.appspot.com/1 コメントコメントを投稿[–]aristus·17 年前返信There's already a rel=canonical element supported by the major search engines:http://ysearchblog.com/2009/02/12/fighting-duplication-addin...
http://ysearchblog.com/2009/02/12/fighting-duplication-addin...