MOBILE SITE WITH SEPARATE URLS
so first week back at Hilton, im finishing off 2 responsive sites for mobiles. the sites ended up on a m dot subdomain
with the cool media queries and css transitions out the way, the question of duplicate content came up. so the way to build mobile sites with separate urls is to have a canonical link tag on the mobile url and a alternate link tag on the desktop site.
with that out the way, next was redirection and user-agent detection. the redirection has to have the vary http header and it should redirect to the url specified in the alternate link tag.
and finally, the sitemap on the mobile site. The namespace has an extra mobile protocol and there is an extra mobile tag.
if after all that the site is penalised im gonna be upset.