Entropay.com is great - I use it for sites that really don't want my Australian dollars (normally this is enough for me to never buy from them, but sometimes I really do need the product). The cards are "American", but appear to be issued somewhere in the EU - I've had the number rejected by someone, maybe Sling?

I do wonder if I'm getting flagged as a higher fraud risk when I use it, though.

True, I remember my card at Entropay being registered under Malta, Europe. But fortunately, online services accepted it.

Do you remember how you checked this? I wonder if there's a BIN lookup somewhere.