How come some people score so much on Bejeweled?

even on day 1 it seems like some people score 600,000 and i am not even making the 100,000 mark. I am puzzled at how they can score so high so guickly, any ideas?|||Well, some people glitch the system for the crazy highscores, and there are a few who get really lucky, and then there are the people who are REALLY good. People that figure they're next 5 moves before they even make them.