There is a minor flaw in this excellent plugin - it seems to produce invalid markup when there is a rel-attribute within a link. Example:
I have a link that looks like this:
<a rel="nofollow" href="http://www.trigami.com/?blog=http://www.semper-ti.de/">Trigami-Anzeige</a>
And here is what Google Analytics for WordPress does to it. Note the missing blank just in front of rel.
<a href="http://www.trigami.com/?blog=http://www.semper-ti.de/"rel="nofollow" onclick="javascript:pageTracker._trackPageview('/outbound/article/www.trigami.com');" target="_blank">Trigami-Anzeige</a>
