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Re:Facebook, Twitter, LinkedIN - they aren't it by terrykohla on Thursday May 16, 2013 @12:47PM (#5719577)
It seems like what you're describing is achievable via Twitter.

Use hash-tag for a particular topic.

If you like what somebody posted (perhaps a link to their blog), you follow them and if need be you can interact with them.

Re:Facebook, Twitter, LinkedIN - they aren't it by sharecred on Thursday May 16, 2013 @03:48PM (#5720718)
Theoretically, I agree with you. But since the conversation itself (comments, related posts, recognizing merit, etc.) is not the focus of Twitter - it is a good tool for emitting news, but not built as a platform/environment for meaningful dialogue or eco-system.