yet another seo url question

[eluser]StefanAlexandru[/eluser]
Ok I will show you my whole configuration, but I've tested this and because of reading entries from db by id CI will not care about the next segment of the URI.

Controller (This is the controller which is called when viewing an ad) :

Code:

public function display(){


                 $this->load->model('General');
                 $id=$this->uri->segment(2);
                 $data['anunt']=$this->General->adbyID($id);

                 $this->load->view('ad', $data);
        }

Model :

Code:

public function adbyID($id) {
                $this->db->where('postID', $id);
                $query=$this->db->get('v_ads');

                return $query->result();

View(this is the view from which I am calling the controller/method) :

Code:

<?php  foreach($lastads->result() as $l) : ?>
<?php $url_title = url_title($l->title);?>
<h2>&lt;?php echo anchor("ad/$l->postID/$url_title", "$l->title");  ?&gt;</h2>
&lt;?php echo substr($l->content,0,25);?&gt;
<hr>
&lt;?php endforeach; ?&gt;
&lt;?php echo $links; ?&gt;

and here is my route configuration :

Code:

$route['ad/:num/:any']= '/ad/display';

Because in my controller I am reading only the id, this is what CI cares about, so changing that uri segment the user can play around.