Up in the search form on that page there is a dangling open <font> tag reading
<font FACE="ARIAL,HELVETICA" size=-1 COLOR="#FFFFFF">
which gets propagated down over the article. In fact, there are 193 <font> tags in the page, but only 189 </font> tags.
(According to my HTML validator, that page scores 104 warnings and 4 errors. When is vB3 coming out? 🙂)