Tweeting Ayu

I was just wondering how a few of us lucky AHS members got to tweet a message to Ayu? Do you have to live in Japan to do this? I just created a Twitter account a few days ago (not just to keep up with Ayu, we do that pretty well enough with nice people like Misa-chan and the forum moderators and all (Thanks guys, you rock!)) and I noticed that I don't have the option to tweet her except for when she posts pics....