member_fb_post.php

<?php
/*
Plugin Name: User Feedback Page
Plugin URI: http://URI_Of_Page_Describing_Plugin_and_Updates
Description: Creates a post for each user on registration to which other members may add comments to. The new post is titled with the user's login name for easy linking from user profiles. Check out the plugin CMS Press for creating your custom post type. Idea by justbishop, code HEAVILY guided by templaedhel (thanks again!)
Version: 0.0.1
Author: templaedhel, justbishop
Author URI:  http://thingscosmomakes.com/, http://www.clothunderground.com
License: GPL2
*/

add_action ( 'user_register', 'create_feedback_page' );

function create_feedback_page($user_id){

$user_info = get_userdata($user_id);

$new_post = array(
    'comment_status' => 'open', /* important, probably shouldn't change */
    'post_title' => $user_info->user_login, /* titles the post */
    'post_content' => '', /* add any content you'd like in the post (empty by default) */
    'post_status' => 'publish', /* go ahead and publish, right? */
    'post_date' => date('Y-m-d H:i:s'), /* Just the timestamp */
    'post_author' => '1', /* ID of author. Set to admin to prevent users from editing the feedback comments on themselves */
    'post_type' => 'feedback', /* name of custom post type (must be created first) */
);
$post_id = wp_insert_post($new_post);
}
?>