Thanks to those who responded to my question about SNA software. Here are the packages that have come to my attention so far:
Not a whole lot out there for this kind of application. InFlow seems to be the most well known based on inquiries I’ve made.
Are you talking about FOAF-type information? Here’s one – http://jibbering.com/foaf/
FOAF = friend-of-a-friend. This is an experiment in using RDF to depict who-knows-who – and there’s been a lot of discussion of using it in “trust networks” – that is, if I know Sue and Sue knows Ted, then I have a higher level of trust toward Sue than Ted. Also more trust toward Ted than toward someone with more degrees of separation from me.