Well, as you asked me how to reply, now i'll tell you =3=
first, click the 'reply' button, and type what you want to reply as the box appear. Then, at the right side of the box has many little expressions, you can actually ignore them*slapped* After that, at the right bottom side has two buttons, 'Preview' and 'Add Comment'. Press the 'Preview' button to preview what you've typed. Press the 'Add Comment' button to done your reply~
that's all!
And bout the chatroom, here's the link:
[link] just click it, most of the time I and Kaori will be there XD