Unless I'm the only person that has my private keys, and all signing is done on my computer, you are a fucking dumbass if you use this wallet because you will lose "your" coins.

You just admitted that nothing is 100% safe. Besides, do some reading.. the chrome extension for Blockchain.info is quite secure. Not bulletproof of course, but a hundred orders of magnitudes better than your current setup with is "send me coins".

Here is what WILL happen (guaranteed):

1. Operator goes AWOL, with no renewals server goes down
2. Operator disappears along with the coins in the wallet. Possibly a "hack" explanation.
3. Site actually gets hacked by someone else, you lose some or all of your coins

Don't store private keys on server.

If you don't have the private key, you don't own the bitcoins. Period.

Sorry if I'm a bit harsh, but this will end up with people losing their bitcoins to a hacker, to you, or to /dev/null.

Especially considering how the operator was registered a couple of days ago, he most likely saw how instawallet could have stole 10 million USD and wanted to scam others.