|My sorry bracket: if it's red, it's wrong.|
The probabilities were about the same whether I devoted 15 minutes, 15 hours, or 15 days, so I expended the minimum effort by using a random-number generator and giving greater weight to the higher seeds.
I was quickly eliminated on the first day and ended up picking only 29 out of 48 games correctly (no one is still in contention--the top entry scored 44). With 4 million people doing better than I so far, there's no chance to win one of the twenty $100,000 consolation prizes.
Nevertheless, it was fun and I'd do it again next year. Maybe I just have to adjust the random numbers for strength of schedule.....