Continuing my thoughts from yesterday...

I'd like to introduce another couple concepts: memes and social networks. There's an excellent article in the March Scientific American (the quality of the writing will not keep me from cancelling my subscription due to their incomprehensible policy of not allowing print subscribers access to online content, however) on epidemic/pandemic modeling and social networks. If you substitute "meme" for "disease" and look at some of the social network modeling they diagram, this is yet another powerful way of modeling communication behavior. And it ties in nicely with the writings of Malcolm Gladwell and others on plotting social trends, tipping points, "sneezing" and other neat ideas on information dissemination.

If you can somehow overlay this diagram on top of the network diagram you already have, with a meme as the fundamental unit, now you have accomodated meaning (and maybe context?), and you're coming closer to an interesting model.