On Sat, 08 Oct 2011 01:14:11 +0200, Thomas Gleixner said:

If it would be only the "Sent from my .* phone" mails, it would be
easy to filter out in .procmailrc. The bad news is that this habit of
top posting and miserable quoting spreads like cancer and I have no
intention to cope with that anymore. Having to scroll down several
pages to find the content (if any) of a reply is equally annoying as
reading a top post with no context.

A sufficently configurable MUA would allow you to define an alternate "delete
with extreme prejudice" command, which would both summarily discard the item
being read and send the author a canned message that said "Due to top posting
and lack of trimming of quoted material, I was unable to find your actual
point.  Sorry your point has been discarded and lost".