It's a good explanation for using a referral link, I guess, but just so you know, as a rule, referral links are not allowed on Bitcointalk. Since they are not allowed, it might be that people won't click it because of seeing that it's a referral, and this way you'll have fewer visitors than you could have had if you just offered the official link.
As for the website, it looks pretty good, and it's clear that it's not a totally new and unknown kind of place. However, it seems unbelievable that people won 23 million dollars there. And if the website has been around and doing great for a while, then how come that you created the ANN thread here just now?