There is a way to defate this that is much simpler, in the examples on the page 5 out of 7 examples has the answer in the question. Just do MD5 sum of every word/combination of words in the question and you would find the answer to many of the questions. This together with a targeted dictionary would propbably give you a very high success rate for little cost. MD5/SHA-familly hashes are inexpensive to compute, you can do billions of the in a second. If you cant find the answer, then just request a new challenge untill you find one you can answer.
