@yotix:
http://desktoppub.about.com/cs/typespacing/a/...Interesting that you use this as one of your references, since it hardly supports your dogmatic position. Within it, one reads:
"It is generally accepted that the practice of putting two spaces at the end of a sentence is a carryover from the days of typewriters with monospaced typefaces. Two spaces, it was believed, made it easier to see where one sentence ended and the next began. Most typeset text, both before and after the typewriter, used a single space."
and:
"Professional typesetters, designers, and desktop publishers should use one space only. Save the double spaces for typewriting, email, term papers, or personal correspondence. For everyone else, do whatever makes you feel good."
Presumably, LEO postings are similar to email, so please forgive me if I use two spaces. Or more.