Its not difficult to consider the ways in which Social Network Analysis would be useful in the field of Business and Finance. I know for a fact that it’s already used heavily in Marketing to figure out who would be most responsive to certain advertisements. Facebook revolutionized that model for its advertisers and has been extremely successful with it.
As far as my specific field of Finance goes, I’m sure Social Network Analysis can find its use there as well. It could be used to compare and contrast different companies in the same field to influence investing decisions. It could also be used to show where high-ranking employees went when changing jobs. This sort of mapping would be useful in forecasting how a company’s policy’s might change under new management. This, too, would be a good tool for making a decision on whether to invest or not. Combined with other forms of analysis, SNA could be a very valuable tool in the field of Finance.