leonidia:Maybe, maybe not, but I'm not quite sure where you're going with this. Are you attempting to equate bank B with the credit card issuer? I don't see the similarity. I haven't deposited any money with my card issuer, or are we talking about something else here?
Yes, this is pretty importaint I think. I haven't given them my money, so they can't take my money and lend it out to someone else under any circumstance.
Credit cards are a promise they will do whatever they can to issue credit on demand up to the limit. How or where they get the cash when you ask for it is not as relevant as in the case when you have given a bank your money up front. The information could be a bit more clear then present credit cards, but it not at all as bad as present demand deposit account.
I don't think I would rely soly on a credit card for cash for reserves, but a credit card combined with the possibility to borrow from family does suffice just fine at this point in my life at least. When I finish my studies and buy like a house and a car my need for reserve cash will rise significantly obviously and I will most likley have some amount of demand deposit reserve along with a credit card.