CorkboardMe is a free, online bulletin board, that allows you to post sticky notes on a corkboard and share it with others. It is similar to Wallwisher. It is very easy to use and set up - simply click and type. You can also embed images.
You can also embed your corkboard into a website.
There is a blog with tips and help available also: http://blog.corkboard.me/
This would be a great tool for administrators and educators to use as a virtual bulletin board with their faculty and students (and for parents) to share information.