"There has been post after post acknowledging how educators love Twitter while also encouraging others to use it themselves. With that though comes skeptics (as there should be), questioning whether the use of Twitter is beneficial to educators. I have thought about that question a lot and I can give a definitive answer: yes and no ( I am 100% certain of this).
So to prove this, we have to look at a few things. First off, we have to look at how educators are using Twitter. Simply signing up for Twitter doesn’t improve anything in your classroom (similar to the notion that having a Twitter account will make people do inappropriate things and cyberbully). It all comes down to the use of it. I offer two scenarios in my own use of Twitter below."
Via John Evans