So you agree, bitcoin's fast, like checks in the mail? or?
Stop with the false analogies. Bitcoin is faster than anything available from the traditional system.
Not joking, explain the difference between me subscribing to a magazine and mailing a check, and your 0-confirm transactions. Penny Stock Weekly won't be able to spend the check I sent them until it clears, your trading partner won't be able to spend the unconfirmed transaction. Where's the difference?
using blockchain.info still can spend an unconfirmed balance in the old version, don't know with the latest blockchain.info version but once the balance confirmed,the bitcoin which has been spent will get confirmed too and it doesn't take too many time sometimes