To get the facebook comment count, I’m doing this:
<div id="fb-root">
</div>
<script src="http://connect.facebook.net/en_US/all.js#appId=555555&xfbml=1">
</script>
<fb:comments href="<%: url %>" num_posts="15" width="518">
</fb:comments>
I have this in many places so is it okay to place the fb-root and script reference in the head section or in a master page (I’m using asp.net mvc) instead of placing it next to the fb:comments?
yes you can. you can put a script reference in head. and have one fb-root in the document (beginning of body seems like a good place). all fb: tags will then be parsed once the script loads.