(off-topic, but I think everyone should know)
Out of every credit card purchase, a percentage (up to 5%) goes to the credit card company - "the bank". In Europe, most credit cards work like the American "Debit cards" where you spend however much you're allowed to, and it's taken from your account with a monthly bill. However, they're starting to introduce the "American type credit card" in Europe as well, where you can (over)spend amount X, but you're only allowed to pay back a certain share every month. The rest is paid back in the following months and you pay lots of interest for that money (up to 18%).
In essence, you're feeding the banks if you use credit cards. Banks already have too much power. I know I won't make a significant difference by not using credit cards (not even having one any more), but who knows - if you guys all stop using credit cards and don't pay all those (hidden) fees any more, you might have more spare cash to buy Amiga goodies ;-)