Originally Posted by dcortez

All linkbacks are evaluated.

The 'PR4 linkback' notion relates to how G used to show linkbacks. Rather than displaying all the linkbacks, only PR4 and up linkbacks were listed.

This is not the case any longer.

The most important thing is that you have legitimate quality linkbacks. The PR1s may become PR7s some day (or not).

Recently (mid-December), there have been some serious (and surprising) adjustments to SERPs - many in the SEO industry are speculating that who links back to you now can actually affect your standing in SERPs in a NEGATIVE way as well.

Check your link-backs and make sure they are helping you rather than hurting you. Anyone needing help in squashing site scrapers who are stealing your content and traffic, contact me.

-Dino