I posted a similar comment as below at SEOMOZ but it have been ignored. So what do you all think here?
My question is: If it is true that PageRank Sculpting was or is now a myth, what is with Bots Herding?
For example:
If page A has a followed link to page B, and the page B has a meta robots tag with a “noindex” directive, or using the unofficially supported my Google "noindex" directive (on my own risk), and page B has a link back to page A.
Andy Beard Noindex doesn't affect PageRank, at least not necessarily - pages with noindex accumulate PageRank and pass it on like before, though I have read a few people speculate that pages that are indexed might pass more meaningful juice, but that is speculation. I don't noindex category and tag pages.
I don't noindex category and tag pages.