A week ago, I posted a virtual wall/sticky note tool called "Lino" which is found at linoit.com. There is also an iPad app for Lino. I also wanted to share with you Wallwisher because though it is similar to Lino when it comes to a virtual wall with the ability to post sticky notes, Wallwisher is slightly different. Again, imagine a huge virtual wall and you have a big stack of virtual sticky notes. On those virtual sticky notes, you can write statements, questions, opinions, answer, and/or thoughts. With wallwisher, the teacher, or whoever owns the account, can change their virtual wall to the option of "edit by others" which gives other people (students) the opportunity to add sticky notes and/or edit preexisting sticky notes.
Application for Education: I have used Wallwisher in the past in my Greece unit. I used wallwisher to help students review by responding to questions by each other. Their task was to post 2 sticky notes. The first sticky note was a question about a greek god/goddess. Their second sticky note was an answer to a fellow classmates' sticky note question. So, by the time we were done, our virtual wall was covered with greek mythology. The students can see other questions, so they know what questions not to post to prevent doubling up. Great way to make reviewing interactive and excited about learning. Students love to see when and who responds to their question. Gives them ownership and pride that someone responded to them!
Above is an example of how I have used it.