I think that it is important to consider the platform in which you communicating. It needs to be the right tool for the communication that you have in mind. While social media may be a great way to communicate with your students, I have to consider what my students have available. Our school is fortunate to have every student a chromebook. Unfortunely, our district blocks social media platforms from it. It may be a great way to communicate one on one, or to make an announcement, but not for learning, for my district.