Basically, diffraction is the spreading or bending of waves around obstacles, such as openings in slits. The phenomenon is the result of interference (i.e., when waves are superimposed, they may reinforce or cancel each other out). :)
I'm not sure if this is what you mean, but...
Open up Internet Explorer > Tools > Internet Options > Content > AutoComplete.
And uncheck web addresses. See if that is what you wanted and if it isn't... well, disregard this. :D
Should work for Windows because it's treated like web...
How shocked were the judges?
It's the people's complacency. :p
Rob wasn't even in the bottom three, so ultimately it may be Rob's looks vs. Paulini's talent (just speculating the last two people - it'd be funny if it really was Millsy vs. Paulini). :D