I think it's a scam because BCP doesn't inform about their terms and conditions of business. In addition BCP graps a fee of 0.01 BTC for transfering although Bitcoin changed it to 0.0005 BTC.
Non-disclosure of all fees (including x-fer), non-disclosure of minimum x-fer amounts, etc... That's what they do. You buy in and get trapped because you want to minimize your fees or you forfeit your coins and move on. I suspect they like lots of unsuspecting miners trying out the site then leaving their meager coins behind as they leave for more lucrative mining opportunities. Their model seems to reinforce my suspicions.
If they fully disclosed ALL of their fees and payout rates how many new users would join?