Another site to add to the list of wallwisher-type websites – Primary Wall is a web-based sticky note tool designed for schools that allows pupils and teachers to work together in real-time. No sign up or sign in is needed to use it. http://primarywall.com/
Unlike some of the other Walls out there, PrimaryWall was concieved by a teacher and is built for schools so they deliberately kept things simple, fast and user friendly. The font size of the notes is quite large when typed to make it easier for younger users. Some lesson plans and ideas for teachers are provided on the site.
PrimaryWall is free to use at the basic level, with a premium version available with more features such as Walls that last longer than 30 days, the ability to change font and background and easy embedding.
The site looks great, and Primary/Elementary teachers who like the idea of something like Wallwisher should definitely check out PrimaryWall.