@b0rk that seems useful (unless maybe when you're running a shell inside de Emacs, you prolly don't want a GUI browser to spawn, bt that's details).
Which reminds me, I believe there was a proposal to add up, previous, next semantics to html and it got rejected.
One of the amazing things about info (esp in emacs) is that you can read the whole document just by hitting the space bar. For, next screen and next section alike. No such thing exists in web browsers today. Similarly you isearch or regexp-search, go to node, jump to index entries. Once you're used to it, using HTML documentation becomes terribly cumbersomenin comparison.