It's a shame that most exchangers don't accept MoneyPak reloads from clients in exchange for bitcoins. It's pretty much the easiest, cheapest and most anonymous way for the average Joe to give funds to an exchanger in the US.
There is a solution however. Or several of them. You don't have to use GreenDot's crappy cards to accept MoneyPak reloads. You can reload any of the following cards with MoneyPak.