Monero mining pool MineXMR has announced that it will shut down on August 12, before Monero miners need to reconfigure to use a different pool.
Officially, miners are advised to transition to a decentralized p2pool, as there are no mining pool fees when using p2pool, and a decentralized mining pool helps support the Monero network.
Remaining pending rewards will be sent automatically after the pool is closed. It was reported in February that MineXMR controls 44% of the computing power, and community members are worried that a 51% attack may occur.