Correcting someone on Twitter draws a lot more attention to the conversation than necessary and, in my experience, people react more defensively because of it.

Correcting someone on Twitter draws a lot more attention to the conversation than necessary and, in my experience, people react more defensively because of it. I also don't think it makes for very good UX to have to go to an entirely different site to ask questions or get refined answers to posts, especially when those conversations are relevant to everyone else who reads it.