Overdrive Interactive has released a Social Media Map to educate marketers on the power of online, search and social media. I think this is an outstanding social media reference guide that can be used in education. The Social Media Map is organized in numerous categories providing a comprehensive collection of social media sites and tools. This social media map should be useful for teachers who use social media in teaching and learning. You can click the below image to enlarge or download a pdf version with live links.