There is a strong and growing demand for communities within distributed networks. They help new-comers immediately realize the value of these enigmatic services like Twitter. Verticals foster a conversation for eavesdropping or participation. What is striking is how much of the conversation flows around the few at the top. Below is a chart of the 225 most active participants discussing stocks and finance on Twitter. The orange bars represent the number of times a user was included in a tweet (an @reply in Twitter parlance). The green bars represent how many times the same user included an @reply to another ...
twitter.com/dougw