I'd never heard of HSTS, but after reading that wiki page I find myself wondering along with Peter how much good it could ever do, in general, that a 301 to https doesn't already do. Sure it's good for a naive user who has already been to the correct uncompromised site. Sure it's good for a naive user visiting a popular Chrome-approved site with Chrome for the first time. I don't see how these two minor wins (especially for a site like that under discussion) make it worth the effort.