A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on Usenet?
CW says...
You can try to ratioanlize it as much as you want. The willfull electronic
interference of a radio service is a crime.
You need to stop saying things like "is a crime" when posting to
Usenet, a medium that is worldwide.
Also, the following web pages may help you:
Bottom vs. top posting and quotation style on Usenet
http://www.cs.tut.fi/~jkorpela/usenet/brox.html
Why bottom-posting is better than top-posting
http://www.caliburn.nl/topposting.html
+What do you mean "my reply is upside-down"?
http://www.i-hate-computers.demon.co.uk/
The advantages of usenet's quoting conventions
http://homepage.ntlworld.com/g.mccau...ks/uquote.html
Why should I place my response below the quoted text?
http://allmyfaqs.com/cgi-bin/wiki.pl...bottom-posting
Quoting Style in Newsgroup Postings
http://www.xs4all.nl/%7ewijnands/nnq/nquote.html
--
Guy Macon, Electronics Engineer & Project Manager for hire.
Remember Doc Brown from the _Back to the Future_ movies? Do you
have an "impossible" engineering project that only someone like
Doc Brown can solve? My resume is at
http://www.guymacon.com/