Allow users to post topics, but not see anyone else's posts

I have searched for this (I'm not a complete noob!) and I couldn't find an answer.
I would like people to be able to post new topics, but not be able to see what else people post

Thats not possible unless they add the hide code into each post they do. But they can see it when they post in that topic.

Code:

[hide]text here[/hide]

Could I manage their account and make their sig. say:

Code:

[hide]text here[/hide]

Will it work in their sig?
EDIT: no. :-(

This is not possible unless u use the hide tags, which u have above