I am exploring the utility of a social network at my company. My reasons for doing this are to increase the knowledge sharing within my organization (internal and external) and catalyze more self referencing with my market segments. Ultimately, it will have to come down to increasd $ for the company if we are going to spend resources on this. Linked in doesn't weem to meet these needs nor does facebook (especially if I don't want my competitors benefiting). I am looking at a service call Ning? Anybody know anything about this?