I think there must be a bug in the advanced robots settings implementation. Plugin version: 0.4.2
I'm going the following:
1. I've changed "Meta Robots Index" (index) and "Meta Robots Follow" (nofollow) settings in the "Advanced" tab in the "WordPress SEO by Yoast" metabox when editing a page.
2. When viewing all the pages, the "Robots Meta" column has got correct values: Index, Nofollow.
However, when I view page's source the robots meta comes up as
<meta name='robots' content='noindex,nofollow' />
I think this could be happening because of "Meta Robots Advanced" setting in the same "Advanced" tab. This setting is preselected as "None", which for robots means "noindex, nofollow". And that seems to have a precedence over my manually set up settings in "Meta Robots Index" and "Meta Robots Follow" fields.
Maybe preselected value should be not "None", but something like "Use manually setup setting above" or the way that robots meta tags are created should be fixed.
Hope that makes sense.