List Etiquette

Hi, After googling 'Web Etiquette, Top Posting', I still am puzzled why some people on this list insist that top posting is bad form, rather than personal preference. The arguments seem to be balanced on either side. Checking the list's archives, I noticed that those who object to top posting almost invariably top-post their objection (perhaps for added emphasis, who knows). Further, after searching the list's archives on the subject, I noted that the archives are organized by latest response => oldest (the original message); that is, the archives, in effect 'top-post' all threads: latest first (on top of the list) and the oldest (at the bottom of the list). Seems to me much easier to scan the Subject, see how it's developing by reading the reply on the top, rather than have to wade through even snipped old material. I've been on this list, on-and-off, for a few years, and somehow I must have missed the discussion on the unwritten rule of bottom-posting. Perhaps someone could enlighten me with a url? Regards, Andre