If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
You will not see it with View Source (C-u). Try right-clicking on the page and selecting Inspect Element (in either Firefox or Chrome). (The tag is added by some Javascript, so it's only present in the DOM, not in the original source).
Ok, it seems the culprit is this fragment
<!-- Site Meter -->
<script type="text/javascript" src="http://s18.sitemeter.com/js/counter.js?site=s18lesswrong">
</script>
<noscript>
<a href="http://s18.sitemeter.com/stats.asp?site=s18lesswrong" target="_top">
<img src="http://s18.sitemeter.com/meter.asp?site=s18lesswrong" alt="Site Meter" border="0"/></a>
</noscript>
<!-- Copyright (c)2009 Site Meter -->
Commenting it out will get rid o...