I haven't seen any withdrawals come from this site yet... I think the first one will be this coming Sunday. The admin has said (in his official thread) that the first 100 signups will be locked in at getting their balance paid out every Sunday, regardless of hitting the high threshold of 0.01BTC required in order to withdraw.
I am skeptical of sites like this, but I have signed up; I can report back later in their official thread of my progress moving forward.