I saw this also and I try to bet with an amount closed to that one. I bet 5 times to test my luck but alas, i lose 0.05btc in an instant. Maybe chain-bet is not for me . Anybody here win with a bet greater than 0.01
BTC?
I always win when I bet small and vice versa.

I tried it too and just lost it. Maybe the guy just got really lucky at his bets. Well this is gambling we can't really blame it on the site or anything else. It's just we get lucky or not. Though this is also assuming the site we are gambling on is legit and that it is not cheating us in any way possible.
But congrats to the guy who turned a small amount to a big one, it's always hard to do regardless of what site you are on.
The key is in repetitive betting on a specific number.