Simple conversation wall I want to create a simple wall, where user can post some text, and other users can reply on it. It can be done without ajax or with. I have made few modules before, but now  i am stack with this part, how to create a page(which i can link into menu) on which i can post message, and then watch the list of this conversations+comments, should i use Views module? any examples would be the way.

here is example of that wall,
Check this out http://drupal.org/project/facebook_status.
Also if ur on D7 then https://drupal.org/project/statuses