Partial Social Attention.
Further to my early acquirer post and having watched with interest at the different way people use Twitter, I am still finding the raison d'etre of a single focus for one's social networking to be somewhat elusive.
Convenience is an understandable goal, but the people in my address book are there for very different reasons, sometimes multiple reasons. So lumping together these different market segments of my social life is not entirely logical to me. It reeks of partial social attention - not wanting to miss out on anything because you wrongly believe technology will allow this.
No, Grant McCracken is right when he suggest that we will all require a number of social networks. Technology may facilitate the diary management aspect of networking but it can't replace the increasingly vital human component.
Technical Addendum: Is the fact that I can't click through on links in a Twitter window that appears on a publically accessible blog merely a technical glitch or an accidental form of social exclusion/elitism?