I know this should be fundamental knowledge concerning Seo basics but what can i say i am a newbie lol. My question is about creating backlinks. What happens if you target websites with page rank of pr4 to pr7 only for backlinks. I mean if you devote all your time making these backlinks and not adding ones which are below pr4 will this trigger google in any way? Is it nessecary to have link diversity and include lower quality backlinks?