If you want to know how communities form on Twitter, you'd first need to know what the topic of conversation is.
If it's politics, you can almost be certain that people are talking to each other in partisan groups, mainly agreeing with each other, and pretty much ignoring the other side. If it's an entertainment or a professional subject, groups form tightly and talk deeply in distinct topic groups.
On the other hand, massive numbers of people may talk about brands, but have little interconnection between each other. And global news will likely generate large numbers of … Read more