Best PD for teachers since Pinterest!
I feel like Twitter for my students (elementary) is best used by me as a PD app. I find many great idea via Twitter and can apply them immediately into the classroom setting. This has 100% made me a better more innovative teacher this year after using Twitter more often and connecting with other educators in the area, as well as in the world.
How I Use It
I use Twitter to share student work among my colleagues in my school district. Our staff development coordinator has created a hashtag for all of us use when we are tweeting or retweeting so that others can learn and follow. I use Twitter for PD and to expand my PLN by following many great companies and websites.