I don’t really know much about this (the page/FAQ is pretty sparse), but it seems cool. And there’s no entry cost. And you can use any environment/programming language to solve the problems. So I signed up for it. I’m sure I won’t make it past Round 1, but it seems like it’ll be fun, and I’ll get to flex my programming muscles. Anyway, stay tuned for updates. And any other programmers (professional or otherwise) that are reading this, you should sign up too.
You never know just how good you are until you put it to the test. Also, friendly competition is good for you.