Best practice: Nofollow tag in SEO
A big shakeup to site indexing practices was announced by Google in June 09, Matt Cutts, head of Google's Web Spam team at Google explained that the role of the tag had changed in the eyes of the search giant and the ‘nofollow’ attribute for links is nolonger being recognized. Since 2005 it had evolved as a way to fight blogspam to a power SEO tool – but not any more.