Apparently MasterCard and Visa are clamping down on the use of prepaid (reloadable?) debit cards for use at online gambling websites to comply with the Unlawful Internet Gambling Enforcement Act (UIGEA).  It isn’t clear whether this applies to just some of the vendors of prepaid cards (Vanilla Visa, NetSpend) or all of them.  It also isn’t clear if it applies to non-reloadable prepaid and MasterCard and Visa branded gift cards.