<rant>
It's been more than two and a half years since 
YouTube was launched.  It's the most famous video sharing service on the Internet today.  I know a lot of people 
know about it.  But the problem is they don't 
use it.  Very often I get emails with a 
zip files attached to it.  The zip file contains one single 
WMV file.  Instead of taking all the pain to zip a WMV file (which results in almost no file size difference; but a hell lot of annoyance), if at all they upload it to YouTube or some other fancy video sharing program they like, it would be a pleasant experience for us to watch it.
</rant>