l hold my coins in exchanges,l not use blokchain explorers,maybe in the future when l have more money.
Do you still remember bter hack, cryptsy collapes etc. Users hav no way to get their money back coz they give money to others. Just be cautious to use exchange. They could turn out to be scams any time soon. You shoud have full control of the private key. Ther is nothing to do with how much you have. When you withdraw the money, you need to check it whether it gets confirmed in the network! or when you send money, you need to prove you have sent it. The best way is to quote the tx for the receiver.