The document discusses various social media platforms that can be used by educators including Pinterest, Twitter, and Google+. Pinterest is described as a photo sharing site good for visual learners but requires users to sign in. Twitter allows connecting with other educators globally through hashtags and lists. Google+ is well organized for groups, contacts, and sharing links and files. The author notes finding Google Classroom clunky compared to Google Docs for sharing course content. Overall social media provides valuable professional development for teachers though the large amount of available information can be challenging.