You can use this to create a Personal Learning Network (PLE). A video that introduced the use of this tool was shared by Ann Johnston at IU 12. That can be accessed here: http://www.youtube.com/watch?v=YEls3tq5wIY
A 7th grade student gives a tour of her personal learning environment, sharing how she uses Google Docs, blogs, Evernote, Skype, and more in her life science class.