One prove that a good user interface design is needed in all aspect of life :
I got a post of comment regarding my previous blog about web developer skill, it said that I have to put valid source reference URL for every quote that I post. Hmm... I did doing it from start, but due to my personal recklessness, i put the reference,as hyperlinked text, not a raw URL, on the lefthand side of the under the quote body, as oppose to the convention to put it right justified to be more identifiable as cross reference.
Aside from the fact that the commentary is actually a bit biased since it comes from a friend of mine who is a web designer who refused to learn programming :)) , this case in general is a good example of user interface intuitiveness and formal convention, so beware, for everything that touches human, it should be simple but carefully crafted for full usability...