Had a conundrum the past few days with Twitter - among several IDs, one was being populated with a mix of "business" and "community" news. With twitter, there's no clear way of categorizing tweets or conversations by tags or categories; the conversations are aggregated but reflect not necessarily a single topic, but either (1) a non-purpose-driven dialogue, either instance-based or continuing, or (2) or purpose-driven dialogue, where the communicators intend to resolve a question, promote something or provide alerts/updates. In traditional knowledge management terms, communities typically exist as (a) communities of interest (COIs), (b) communities of practice (COPs), or communities of purpose (COPRs). Since the ultimate outcome of these sorts of communities was to add to and share elements of a knowledgebase, the concept of "communicating for communications or simply socializing's sake" isn't really included in these three community-type defi...