Hey Ruth!
Thanks so much for the response and answers to my questions. You helped solidify what I was already thinking. I was wondering why the rel=next and rel=prev tags weren't being used. I thought for sure SEOmoz would be on the forefront of new on-page SEO techniques. Totally get the whole "do as we say, not as we do" mantra though.
One question though: You said you noindex category pages' pagination because of duplicate content; that the items also exist in the main blog's pagination as well. But, don't the items on the main category landing pages exist in the main blog as well? So wouldn't that be duplicate content as well?
BTW - Congrats on the new role as the Lead SEO, must be exciting!
Thanks,
Ken