Don't use a site that doesn't give you full control of the private keys (e.g. Coinbase and any of the exchanges and ecash.io).
I saw a new one or maybe an old one, its called ecash.io. Any review/report on this?
There I fixed it.
But what are the chance of coinbase.com going haywire?
Considering the history of Bitcoin-based businesses -- it is a certainty.
Considering that Coinbase is a start-up and probably still requires investor funding to stay afloat -- it is likely.
Considering an optimistic (but realistic) outlook -- it is still very possible.