agent_x - 8:48 pm on Dec 4, 2011 (gmt 0)
Personally I wouldn't have anything in the URL which is just there for the sake of it. I.e. don't have directories just for the sake of them. If you actually had to create the physical files, you probably wouldn't make a separate directory for each article, you'd probably just put them all in an "articles" directory.
So I would have
or something like that. Keep it simple.