I have been thinking about the practicality of using Google + in K-12 classrooms. The use of circles to target who sees what would seem to address a core concern associated with the use of social media. I understand how I could create a circle to target content I want to share with a designated group of students. What I am attempting to imagine is how each of these students would create a similar circle to share things with the same people in reverse. Then would they remember to set the attribute that limits whether content can be shared further. Just knowing how things go – this seems likely to involve significant challenges. Am I missing something?