In considering whether speed or accuracy is important in social media, I would have to submit that it would depend on what the message is. If you are letting everyone know of an earthquake or a fire breaking out, then speed would be of essence. You are having a party somewhere, hey, accuracy hands down! Given the wrong address, no one would show up! If you get the message wrong, people can get hurt or damage done to others. Caring and kindness always win out over a hateful message.