I don't know how much of an issue this is in practice, but if the Google favicon service only requires the hostname then it will sometimes get the icon wrong. A

I don't know how much of an issue this is in practice, but if the Google favicon service only requires the hostname then it will sometimes get the icon wrong. Any individual page can specify its own icon via a link element in the page header. (This is essential when multiple sites share the same host.) Is there any reasonable way to deal with that?