Great question! I assume they are not charities so they must be making money to cover their bills and make a profit. Maybe it has to do with the HI-LO game. The odds on that game are in Favor of the House, so I Never play it! But maybe some people Deposit Bitcoin To this site in order to play the random game, and they make their money on the guaranteed profit of the game. Profit for them is guaranteed due to the odds of losing are higher than the odds of winning.

The way to make money for yourself is to Not play the HI-LO Game. Just Roll and take out the coin when you can.

As for whether the site is safe, it seems so. There are no ads there, which are usually the source of trouble. And there is nothing to sign into, so no passwords that can be hacked. I think its about as safe as any other online site, as far as I can tell.