It's 5000 wins per *hour*. Now, common sense should tell you that the fewer people playing in a given hour, the better your odds. So play in the early morning/wee hours of the night and never, ever play in the middle of the day. Also, don't play too many times in an hour, because with each win you get in any given hour, your odds drop - as somebody said recently, you're competing with yourself. If you were really, really patient, you would play only one time per hour (and only in hours less likely to have lots of people playing), but I sure can't do that. 
EDIT: also consider where you are in the US. Playing at 2 AM on the East coast is only 11 PM on the West!
EDIT: also consider where you are in the US. Playing at 2 AM on the East coast is only 11 PM on the West!