facebook no comments

I`m using facebook comments plugin on my web page. When I post comment, it showing on the wall in the FB. But when i go to my web page from FB, no comments are showing. Code:

`

<meta property="fb:app_id" content="166856086729262">
<div id="fb_comm" style="padding-left: 10px;>
<script src="http://connect.facebook.net/ru_RU/all.js#xfbml=1">
<fb:comments href="http开发者_如何转开发://".$xid." width="750" num_posts="5"></fb:comments>
</div> 

` What is wrong?

You need to specify your site's URL instead of href="http://".$xid."

Facebook's plugin links between the application you're running and the URL.