Should university faculty restrict use of social media in the classroom?

Do you think that university instructors should restrict the use of social media in the classroom? While some believe that social media might undermine the boundaries of the classroom, such as by sharing with colleagues who are not enrolled in the class, it is arguable whether this battle has been lost long ago, such as by sharing notes, or audio taping a lecture. Should we relax about this, and let students use social media in any way they find valuable in the classroom? Are you aware of progressive policies to govern the use of social media in the classroom?

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