All I'm trying to say is that when I first read this thread it was an ah-ha, but now it's a duh. Let's look again:

Players with less than 100 hands: 11,106
Avg. winrate: -10.45 BB/100
Total lost: $78,265 (75% of all losses)
That's 68% of the player pool (16,286 unique players) accounting for 75% of the losses.

Players with less than 50 hands: 8,065
Avg. winrate: -17.17 BB/100
Total lost: $56,293 (54% of all losses)
49.5% of players accounting for 54% of losses.

Players with less than 25 hands: 5,099
Avg. winrate: -30 BB/100
Total lost: $34,086 (32% of all losses)
31% of players accounting for 32% of losses.

So the big difference is winrate, which I definitely think is affected by the lose-and-go-home mentality. If an average joe makes a $100 deposit and wins big immediately, I think they're likely to keep gambling, gradually lowering their winrate. If they lose quickly, like most of them do, their winrate is astronomical.

What I've learned is from this is that 1) most players don't stick around the same site/stakes very long (b/c half the players in my database have played fewer than 100 hands), 2) a LOT of players lose a LOT of money in less than 25 hands, and 3) these losing players tend not to show up at the same site/stakes again.

What have you learned?