A callback triggered after object is created. Object can be anything few examples is group, blog, businesspage.

<?php
function my_component_init(){
		ossn_register_callback('object', 'created', 'my_component_cb');
}
function my_component_cb($callback, $type, $args){
	//$args['guid']   $args['owner_guid']   $args['type']      
	//$args['subtype']   $args['time_created']  $args['title']     
	//$args['description']  
}