I don't necessarily agree that Twitter users can't build communities. A friend of mine writes for a sports blog specific to an NFL team. His twitter account (and @replies) show that he is a part of a very strong community around the team. The tweets from these super-fans aren't just missives shouted into space, these people use Twitter almost solely as a response tool to each other. Their tweets look very much like s…
I guess another way of phrasing the original article's claim is that although communities do form, they have no straightforward way to exclude strangers, interlopers, and even griefers: and except for incessant use of hashtags (which could eat up valuable space), there's no simple way for a person who is part of multiple communities to direct comments to only one community. That's a recipe for both serendipity and un…
For example, if you sent me an @reply message to me ( @djloche ) that message would only show up in the feeds of your followers IF they followed me as well. This means you can have a conversation about the latest film with me, the party last night with your co-workers, and a pancake recipe with a friend that really loves pancakes - and there won't be any cross conversation unless there is a natural crossover in the social groups.