I don't think an embargo here would help your cause. In the past I've seen that you can fill an entire Times crossword grid without thinking about any of the clues by visiting sites like answerbank.
I know how you feel though - I like to do the viewfinder competition in the Observer which sometimes can be quite tricky but see that the answer to this is posted regularly in cyberspace so you probably get hundreds of people entering who don't even buy the paper!!