I began using a pre-paid debit card for small items when traveling (due to issues I had with my normal debit card - resolved - but a hassle to deal with) I load $500 on it before leaving and use it everywhere for small purchases.  I have never (knock on wood) had a problem using it or been charged incorrectly..  Anybody else do this?  PS I now sometimes use it online if I'm unsure of the website.