Also, in case you have forgotten Elise is not the only author that has interacted to this magnitude with my students. Ame Dyckman is another incredible author too. Here's a blog post about our initial encounter with Ame, and how our relationship with her continued. Elizabeth Schoonmaker has also worked with my students. We've also had author's like Todd Parr and Peter Reynolds interact with us a bit too. I am certain there are MANY others who would interact with their readers through social media.
These are just a few examples of how using social media can bring real learning into your classroom. It makes me question why there are so many districts that are still banning it. I can't imagine not giving my students this opportunity.
If you're looking for other blog posts I've written on using social media in an elementary classroom check out "Social Media in Grade One? You Betcha!" and "Using Twitter in a Primary Classroom".