If, using robots.txt, you blocked SEOmoz, Majestic etc from crawling example.com, would users still be able to see the link metrics (like domain authority, incoming links etc) for example.com As all the pages that link that that site won’t be blocked, so the bots can still see all the incoming links. Or is it more the fact that if a site has blocked seomoz, then the seomoz won't report on any incoming links to that site either, even though they can see the outgoing links from other sites pointed to www.example.com.