Anyone using a 3rd party wallet host will get all their coins stolen, confiscated, or magically disappeared at some point. Nobody should use them, ever. It's safer, faster, and infinitely smarter to secure your own wallet file yourself.
how?
have the private key backed up
[2] My online wallet (blockchain.info) is encrypted with about 20 wordletter password and the sending of info is all opensource crypto
the worst that can happen is the online wallet service gets shut down, and they get a load of hashedupcryptobabble, and so I fire up bitcoin qt, elctum or whatever and carry on. 
