AdWeek = SPAM?

I receive too many e-mail newsletters, especially when I read much of the same news via RSS feeds. While doing some information cleanup, I attempted to unsubscribe to the ADWEEK IQ Interactive newsletter. I say attempt because the unsubscribe link yields this page:

So it looks like I can't unsubscribe. Looking at the site map, I found no unsubscribe page. Thought it might be under newsletters but there are only links to subscribe, not vice versa. I spent all too much time trying to figure this out. Horrible user experience.

I think I have no choice but to mark Adweek as SPAM.