SEOmoz Beginners Guide – Link Metrics
How to figure out the value of a link? The SEOmoz beginners guide gives you eight different ways to do it.
Here is the list of link metric tools:
Page rank for relevant search terms
SEOmoz domain authority
Google Blog search
Yahoo Site Explorer
Number of links on a page
Potential referral traffic
The video below givens an explanation for each of these definitions of how to measure link authority and link juice.
So take a look and use these tools in your research.
Stay with it, stay well and may your travels be prosperous.