Myetherwallet is security. So it safe to use and hold the coin long time. It future safety wallet. myetherwallet useful to received the token and ethereum. But you are the responsibility for your wallet. So don't share the private key. This important for this process. Private key help to open your wallet. So save the private key. If need for the more information read the rules and regulations. Then create the wallet. Save the private key and ethereum address. So if need to receive the token or ethereum. Share the ethereum address. But don't share the private key. If try to share some people easy to hack your account wallet. So it your wallet. So you are the responsibility for the any issue. So safe to use the wallet. So no one can hack the myetherwallet. So it good future saving the coin and token wallet.