Review our app, typd.in (a web-based Japanese IME)
riobard: Hey the idea is cool! I recalled a similar tool for Chinese. It's actually a Firefox extension, allowing ones without a native IME to input Chinese chars in text fields. However, both typd.in and that plugin share a similar limitation: it's unusable OUTSIDE the browser :|Plus, what's your target audience? Anyone serious enough to type Japanese should have some native IME installed, right?