If you put html in the comment, like a link, it outputs like this

<a href="http://domain.com/somepage/" title="">anchor text</a>

ie, it's putting a \ before the 'http' part and appending a \ at the end

edit- um, it's not showing up, it got auto-corrected by this forum. so it's like this:

\http://ddffdsf.com/\