[allyourhorses]

> Do you really want to spend that limited bandwidth on your favicon that you might have already sent to the user before, maybe even in the same browsing session?

That's a really going point, but if the site's coming down over classic HTTP then still possibly yes, as separate requests are liable to require additional rounds of cold start. The other detail is that I don't think I've worked with a favicon much exceeding 1500 bytes before.

Another option would be pushing the <link> into the footer, but HTML 5 seems to require <link rel="icon"> only in the header. I wonder if browsers really enforce that.