Instawallet is down. It's the reason I tried easycoin.net in the first place. See: http://instawallet.org
Exactly. He's telling you not to use these type of web wallets as the owners can steal your money & other problem's can occur.
Use a wallet like blockchain.info, electrum or multibit, where you have control over the private keys for your BTC so that you don't have to depend on the site to get your BTC.
Oh I didn't see it correctly, I thought he recommended instawallet. I use bitcoin-qt to hold most of my coins and blockchain.info for moving them around conveniently. I just wanted a fast mixing service, as instawallet provided, when I tried easycoin. Turns out I got burnt. :/
