nofollow

Is it possible to set an entire block region to "nofollow" for the purpose of pagerank sculpting? For example, take the use of a tagadelic tag cloud block on a website. If I wanted all those links to be nofollow automatically, how would I do that?

I think something that is badly needed for drupal SEO is a way to add nofollow tags selectively to a menu link.

The noindex idea is good but it doesn't really solve the intended problem. Even if a page is set to noindex and there is a link to it (which of course there is) link juice will be sent it's way. So in a way its actually worse. Your sending link juice to a page and then telling the SE's not to index it. Essentially sending your link juice to oblivian.