
As you can see it now includes ‘Conversationalists’:
Conversationalists reflects two changes. First, it includes not just Twitter members, but also people who update social network status to converse (since this activity in Facebook is actually more prevalent than tweeting). And second, we include only people who update at least weekly, since anything less than this isn’t much of a conversation.
That’s because the actual data told me that people participate in multiple behaviors, and not everyone at a higher level on the ladder actually does everything in the lower rungs.