Ok, first of all - that riddle on
http://www.proveyourworth.net/ isn't.
I took the most obvious way after seeing that url in the bottom and had a look in the source: Now, the good thing, it probably prepares you for work at this company: It's full off HTML 3.2 evilness wrapped in a XHTML 1.0 Transitional header, has an invalid tag that contains the solution and is sprinkled with css in places you might not expect.
Alright, so after you've pasted
http://www.proveyourworth.net/?p=begin&mistake=lit tle and expect your insta-hire you're greeted by a site that wants - your resume.
So what exactly is new about this? I remember Google doing it a few years back?
On the other hand, there might be a real riddle and what they did with that "little" was just to weed out the jerks like me... that would certainly be impressive!
:)