I'm trying to figure what is the correct use of rel=canonical
in case of archive pages (be it date, author, category etc).
Basically, I want them indexed but nofollowed noindexed but followed, as they serve mostly for sorting content and are not directly relevant in searches.
However, I'm not sure what to do about the rel=canonical
tag. Should it...
Strictly be set to point at the taxonomy url?
Point to the homepage (on the grounds that the index page is just a custom sort of the frontpage)?
Be left blank?