VisibleTweets is a site that visually presents tweets based upon a hashtag search that you determine. I have seen this site used at various conferences as a backchannel. Could this be of value in the classroom as a way to gather feedback or questions from students before, during and after a lesson? It is important to point out that there is no way to moderate the comments online and thus the moderation will need to take place in the classroom where students will need to think about the appropriate use of this online tool (perhaps a nice teachable moment).
VisibleTweets
http://visibletweets.com/
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