I'm no expert in bitcoin. It was just an alternative suggestion from my side. I know, from personal experience. In my case it was $ -> €, even though the conversion rate 'sucked' and was absolutely not up to date. There must be other services besides Paypal, where people could use their credit cards to donate money to you. So far, I never needed such services, besides Paypal for some time, and have absolutely no idea about the maket of PSPs (payment service providers). From people from north america you could accept simple 'wire transfers'. For Europe that's not an option, as you had to use the SWIFT system. In most cases, the fees to use SWIFT would eat up or exceed small donations. In general, currency-transfer-fees are a big issue for small payments/donations, especially if you'd like to provide them world-wide.