The free registration bonus (4ubtc) is not interesting enough, IMO you need more than just 4ubtc as a start promo
The cards is not in usual color, make me a little bit confuse to play. And what I like from your site is the automatic withdraw feature, instant withdraw without fee.
Ah, I hadn't noticed that the chips were only ubtc instead of the standard mbtc. Everyone is used to mBtc, the extra digits of uBtc is a turnoff I think.