Should I hold the coin in order to support it or sell it?
And I should not mine on suprnova because they have the majority of hashrate? and so choose another pool???
Regarding HODL or sell - its up to you - i believe BTCZ have bright future so will be holding it for a while And I should not mine on suprnova because they have the majority of hashrate? and so choose another pool???
About mining pool - strong recommendation is to spread hashrate across network - choose another pool; its helping to keep network decentralized and its adding value to BTCZ