Don't mine btcz in pools like suprnova. Btcz Community claims for decentralization and to reach it this coin needs the support from miners, find pools that help giving at least 0.5% to BitcoinZ Community for future growth. Thanks!
Yes but for some people it simply makes more economic sense to join a pool like suprnova. I doubt they will refrain from doing so if that's the best way to earn them some coins.