thanks Strugg, gpuminer, soopy452000, the foundation of summercoin let summercoin reborn. i am a miner who saw so many coin dead. there are hundreds kinds of coin in my harddisk. marucoin is the first coin with x13. but looks like their dev has abandon it. that's an chance for summercoin which has many focus since from summercoin1. maybe you can add some Innovation for summercoin2 which have a good name and nice logo only. we hope it can be next darkcoin.
summercoin has a hard way from born. the old dev abandon. Poloniex take it off. price dump.  but i still trust this coin. i will keep mining and buying.
hope you can understand my poor english.