Looking at joining, but can someone confirm when the last block was found by the pool.
Last block found on mainnet was 8/15/2017. mainnet currently has 0.8 PH/s, and is expected to find one block every 91 days on average.
Last block found on jtoomimnet was 9/18/2017. jtoomimnet currently has 2.6 PH/s, and is expected to find one block every 28 days on average. jtoomimnet will be adding at least 4 PH/s over the next 45 days.
List of all blocks found (both mainnet and jtoomimnet):
https://blockchain.info/address/1Kz5QaUPDtKrj5SqW5tFkn7WZh8LmQaQi4