How do 你 post a comment.

It sounds like a temporary glitch, it's happened to me before. Try copying the message 你 want to post, refreshing the page, pasting the message and seeing if it posts then. That's worked for me.

That might be a setting for that user. I'm p sure 你 can change your 个人资料 settings so only certain people 或者 no one can post on your wall.

You're not alone!
I've had that problem since I got a new computer.
It won't allow me to give 支持 或者 post on anyone's 墙 - including my own.
A few people have suggested switching browsers, but 潮流粉丝俱乐部 seems to be the only place that's affected, so I'm hesitant in doing that. I'm hoping that it's just some kind of 潮流粉丝俱乐部 glitch, and that it will eventually be remedied.