I used to be very strongly opposed to top-posting. The only
software I ever found that does bottom-posting well is Mutt, which is
now worthless in our rich content world.
I stopped pushing
the issue when I got several complaints that I sent back empty replies. The receiver never looked below the "On <date>...." line to see that I
had edited the original post to put my comments in-line (like this one). They
simply looked at the top, thought I had not replied and let me know
that. Made me realize that the outlook way of doing things had taken the hearts and minds of all that were not geeks on the subject.
~Brendan (not a geek, but the mundane guy typing this is).