Using blockchain.info properly doesn't compromise the security of the private key. I have a private key that I have imported in nearly all wallets I have and it constantly has double digits of BTC on it. Still not stolen.
I don't think you know how BCI wallets work.
Yes it does, a secret is only a secret if 1 person knows about it, when 2 person know about it its already compromized.
The mere fact that it's on an online service makes it compromized. Sure its segregated and all that stuff, but one day they could turn scam and start looting big addresses 1 by 1.
But for 2 digits BTC is guess its ok if you trust them so much. For 3 digits
BTC, i would definitely not use them though.
Also Blockchain.info has already beed hacked numerous times lately.
This settles it. You don't know what a blockchain info wallet is.
They DO NOT have access to your private keys....