Just for reference (sorry Stephen), I started doing my own stats on SatoshiDice.com using Armory's blockchain tools.
Thank you, yours is much more comprehensive!
In fact, SatoshiDice.com has lost money so far...
A casino that pays out more than it takes in.
They must plan to make up for it with volume.
But, that would explain why it is so popular.
The missing payouts are a concern though. Hoping to learn the reason for that, and also to learn if there have been attacks that have been double spending (clawing back losing wagers, for instance) or what might explain the losses being experienced.