Wallwisher.com :: Words that stick

I was just looking through twitter posts where I have found some more great links such as Icon finder which has great array of icons for any occasion. These will be great for personalising a web page or class wiki (or even a blog when I find the time) so I have bookmarked this site and changed my recycle bin icon to one with roses. I found the icon finder through a posting by Maryna Badenhorst on twitter.
Anyway, the point of this post is that I came across wallwisher through a posting by Scott Macleod (@macleod) on twitter

You can customise this wall and invite people to post comments on sticky notes. There is an option to approve every post, which may come in handy if you don't completely trust all of your students intentions. A great idea for class collaboration and brainstorming over a period of time.Could be used to list student interests to be used for up coming lesson focus.