We are making the same mistake again.

[BitDreams]

Personally I hope that people can opt in and opt out of anonymity. One of it's main strengths is transparency when compared to the current banking system.

[bg002h]

Coinjoin? Is this much different?

[wiggi]

need to implement ZeroCoin or something like it in the bitcoin protocol.

Protocol change might not even be necessary with something like the othercoin smartcard
(thread: bitcointalk.org/index.php?topic=321085)

Probably not really save for large amounts but leaves no trace in the blockchain. (and no fee)