Recently I came across a wonderful extension (plug-in) for Google Chrome, which I would like to share with you. This particular extension called the "Nofollow Checker" highlights all the Nofollow links on the pages you visit.
Thus with the "Nofollow Checker" you need not view the "page source" to determine whether the links are Nofollow or Dofollow. And the best thing about this Chrome plug-in is that it takes less than a second to install.
I would recommend you install the plug-in to kick start your link-building campaign.
Here is the link:-