Comment on PageRank by QualiTReviews.

Reciprocal Link Exchange PageRank Value Thanks so much for taking the trouble to explain the maths behind PR.

while I think (myself included) most webmasters understand the principles, it can get very difficult to calculate the resultant set of link benefit from one backlink.

It’s also important to note that reciprocal links gain more points when within similar niches or industries than two reciprocal links that are completely unrelated.