When it comes to Social Network Analysis (SNA) a common practice is to use centrality measures such as Betweenness (Bridgeness), Closeness and Degree. For instance, we often represent “Hubness” (in-degree) by colour scale, and “Bridgeness” (betwee
M. Fink, and J. Spoerhase. Proc. Workshop Algorithms Comp. (WALCOM'11), volume 6552 of Lecture Notes in Computer Science, page 9--20. Berlin, Heidelberg, Springer, (2011)