With the URL "<a href="http://...?utm_source=HN&utm_medium=Sub&utm_campaign=429HN1"" rel="nofollow">http://...?utm_source=HN&utm_medium=Sub&utm_campaign=429HN1"</a>, I have the funny feeling someone wants to see how useful HN is for getting traffic.<p>The earlier link from interpares to emphatic.co also something which looks like tracking information.