I'm implementing the new dns-prefetch tag for my web application and I wonder where I should place it in the <head> tag?Should I place it as the first tag in <head> so that browser immediately starts prefetching DNS?<html> <head>  <link rel=dns-prefetch href=//ajax.googleapis.com>  ... other tags ... </head> <body> </body></html>I can't find a good guide about this tag.
Should  tag be placed as high as possible in  website?
dns;rel;headers;rel dns prefetch;dns lookup