The document discusses using microblogging tools like Twitter for educational activities. It describes microblogging as a way to share brief text updates of 140-200 characters via the web or mobile devices for real-time interactions between users. The document lists potential educational uses of microblogging like classroom community building, collaboration on projects, and assessing student opinions. It also notes some potential downsides like distraction, time consumption, lack of educational value, and privacy/spam concerns.