I'd like to vote for an off-line version of the Developer Manual in either *.chm or *.pdf use. It is extremely helpful to have an off-line version so that I can read it on my portable when disconnected from the internet.
And while we'd like to believe that the internet is everywhere, not everybody has wi-fi access to the internet everywhere all the time, and plenty of us rely on wired access only. So what to do when you're NOT connected to the internet?
Please remember that downloadable off-line versions of manuals are still very important and useful to people such as myself.