Me, I decided to skip past all the speculation and borderline-paranoid theories that have always arisen (”always” meaning “in the last 200 years or so”) whenever Google decided to change things around (SEO is a universe in perpetual change: deal with it), and give some practical advice on when and how, in my opinion, you should or should not use the “rel=nofollow” attribute. Nothing really new here; just my own little cheat sheet for the do’s and don’ts of nofollow, covering its most common uses and misuses.

Do not use nofollow
  • On internal links:
  • For sculpting your PageRank (i.e., to “save” PR for your other links): ’nuff said.
  • For siloing your theme: “theme siloing” is so 2005 a technique (and a couple of things have changed on the Web in the last four years, you know), although I agree it can still prove effective in a few cases; if that’s your case, however, you’ll want to go for a well-designed site structure in the first place.
  • To link to pages whose contents you don’t want to show up in the SERPs: there’s....
Post continued here: Rel=nofollow cheat sheet: when and how you should (not) use it