Those mobile specific URLs—m.*, mobile.* and
the like—they’ve got to go. There’s just too many
mobile-specific URLs popping up on Twitter and similar, and since for some
reason the browser detection only only pushes people from desktop to mobile, if
you’re actually on a desktop browser, you end up stuck there. A poor user
experience, and it doesn’t sell many ads, either. People are just going
to have to do that shit right—the same URL (i.e. resource) for everyone,
and content negotiation (or “responsive design”) thereafter. (Set a
cookie summarising what’s in the User-Agent header, if necessary.)
It’s not that hard!