Three stars because with a week of registering, my (thankfully empty) wallet was victim to a hack attempt. I got email notifications of attempts to access my account and was told to move any funds out immediately. So kudos to them for being on top o…
They have your keys. Nodes are not well integrated into the network. DO NOT TRUST UNCONFIRMED TRANSACTIONS. BlockChain.info to BlockChain.info transfers can be reversed (drop out of mempool) since it doesn't get brodcast to the whole network.