I think the site switched to https recently? Not entirely sure why - other forums don't seem to feel the need to do that, it's not as if there are any financial transactions going on that need the secure connection.
Anyway, in IE, you get the "some of this content is being delivered in an insecure way" message when you navigate to most BKP forum pages. If you say Yes to the "I don't wanna see the insecure sh1t", then the web page is displayed "text only".
I suspect it's a balls-up, and it should still be http only.