Redefining networks

Court's post about the multiplex and uniplex conceptions of social networks got me thinking about the varied uses of "network" as a term. I'm wondering whether the different meanings (social network, computer network, actor network, etc.), all somewhat similar to begin with, are coming to overlap--maybe it's just that they're overlapping in my thinking. But Donna's observation about web 2.0's increased resemblance to a Latourian network got me thinking that at least those two are merging.