Subscription & Payment Currency?

[focus]

I live in Australia and am planning to make a Global website which gets income from subscription.

Would it be best to charge subscription in U.S dollars as the population in U.S is much larger than Australia?
It would mean I'd have to pay to convert the money back to AUD but users in U.S would feel more comfortable subscribing if it's in their currency?

Just wondering what are your opinions on this?

[essellar]

It's not just users in the US -- people are more-or-less accustomed to seeing prices is USD, and can easily run a conversion from pounds, euros, yen, rupees, etc., in their heads, so you'd be making it easier for all of your non-Oz customers. Yes, you do have to pay a small fee for the conversion, and it does sort of put you at the mercy of the market value for the US dollar (against the Canadian dollar, for instance, USD pricing has meant that the real international price for Canadian goods has fallen some 30% over the past few years -- our dollar used to be something like $US 0.67, and is now at or slightly above par), but the familiar currency makes getting customers easier. As long as you're selling something which has little or no marginal cost of production (you may have to bump up your hosting plan to handle more users/subscribers, but that price increase should be tiny compared to the revenue increase), it won't matter all that much.