Google Plus is Google’s latest attempt at building an explicit social graph that they control, but Google has been building out an implicit social graph for quite some time. This graph is still relatively naive compared to the maturity of the link graph, but search engines continue to develop this graph. Since it is already directly influencing rankings, and its value will increase, it’s important to understand how this type of social graph is being built. In this post, I’ll look at some of the methods for building the social graph, as well as looking at explicit vs. implicit social graphs.
Building the Implicit Graph
Interaction Rank
They’ve Been Doing This for a Long Time
And Here Comes Google Circles
Article source: http://feedproxy.google.com/~r/seomoz/~3/ElPr7IxSJvw/building-the-implicit-social-graph
