Lol that's awesome amount of paid BTC - 2331.37 BTC is a huge amount.
Considering 156708 users, the 2 398.56+
BTC the site claims to have paid seem plausible. Some users have a big investment here, enough to pay for a living just by clicking on the ore-symbols on this site 3 times a day.
Edit: I would not risk that much money, but as long as it works it is awesome for those people who do.
That's over 1 054 000 USD$ paid
Just WOW!