I almost forgot about that. I use to do this all the time at the casino's. I went with a friend once who was very impressed by it. I would just walk up and down until I had a feeling about a certain slot machine and it would hit 9 out of 10 times. Nothing big but it all added up.
I would do the same thing with the crap tables betting on hardways. The problem most of the time is I would not go with my gut and not bet when I first walked up with the feeling and a hard ways would come up.
It's never anything I would try to gamble on so to speak and think I could do it accurately all the time because I know I would get distracted and be wrong.