How to do the Link exchange?

How can open loop link exchange be detected by search algorithms?

• 1.A owns W1 and W2 which are hosted in different C-class IP.B owns W3 and W4 which has different IPs.W1 points to W3 and W4 points to W2. 2.Site_A -> Site_B -> Site_C .(This can leave some kind of footprint if done many times sequentially thought) How to detect these schemes if IPs are taken care of?

• Answer:

  Google and Bing are moving in a direction where they both will rely more heavily upon social signals than backlinks. One of the reasons for this is the fact that the link scheme you mention is very difficult to detect and because these relationships could potentially occur naturally, they rarely (if ever) would result in a penalty. If a site did engage in the behavior and was penalized, I strongly suspect it would be other aspects that were the trigger. Keep in mind that large numbers of false positives have a debilitating effect on search engines to deliver the best possible results. Bottom line in my opinion is that there is an evolution taking place that will be weakening the backlink signal in favor of less game-able metrics such as user behavior and social sharing. Yes, I believe gaming social signals will be easy to detect but that's another story.