Updated, should install and work on Firefox up to 3.5.x Download HERE
Well, I’m not going to get too heavily into the debate over whether or not to nofollow your internal links, but thinking about how I would go about doing it, I decided that it would be helpful to see all the links on the page, and if they were dofollow or nofollow links. So I present NoDoFollow, a simple firefox extension that highlights the links on the page, color coded according to their follow status.
Here is a screenshot of what it looks like when activated (Thanks, Matt Cutts. I knew I would find some nofollow links on your blog):
The extension installs into your tools and right click menu and highlights the links pinkish red for nofollow, and light blue for dofollow.
I hope that someone finds this useful. I have at least one friend who was asking for this since he wants to try and test using nofollow on internal links.
If you find NoDoFollow useful, or have comments, bug reports, or other requests, please comment here, and I’ll see what I can do to help you out!