Some possible uses for Wallwisher in the classroom? I could see this as a great communication device where students can post questions, either about homework or important concepts from class. Other students can answer these questions, or debate topics by adding their own sticky notes. Sticky notes can be moved around so you could organize different areas of your wall for different ideas. Maybe you want to see if people would rather take a test on Thursday or Friday? Just have students put their name on a sticky note and slap it up under the day they like.
As technology presses forward and we, as teachers adapt to these changes, free websites like Wallwisher are providing unique experiences that make virtual communication more interesting and manageable. If you take a step back, Wallwisher is basically a twitter post/blog page. The difference is interface; you can move and rearrange your posts (sticky notes) and their is a bit more interactiveness to the communication experience. Try it today in your classroom and set up a homework help wall.