It was never safe and had to many security problems.
Its better BTC stays away from credit card transactions.
credit cards offer buyer protection from scamming sellers... it works both ways. Bitcoin offers no protection which is still it's Achilles heel. It's great for some circumstances, not so great for others. Personally I like the idea of passing along paper wallets like currency that can easily be verified but even then the person who makes the wallet controls the private key so thus you'd have to transfer the balance to your own account right away to avoid it being taken back.
This should all be resolved in time though.. fraud protection will be built into future coins, for better or for worse, no system is perfect when dishonest people are part of it.