A Principal’s Reflections: The Skinny on Hashtags The Skinny on Hashtags Upon getting on Twitter in 2009, I was not only baffled about how to use the social media site but also about all the symbols associated with it.  There was no apparent rhyme or reason to using these in any messages whether long or short. One of them was the hashtag (#). Before Twitter I referred to this as the “pound sign” on the telephone and only used it…