A online sticky note service that allows collaborative mind mapping functions.  You can share the Popplets with others.  Your stickies can include videos and images that pull from online sites.  You can upload media from your desktop.  Also offers browser bookmarklet that you can use to add content from other webpages.  Your Popplet wall can be made public, embedded into your blog or website.  A good way for students to create multimedia collages of information they find about a particular topic.  iPad App available.  Good app for visual ideas–collect inspiration, collect galleries, record thoughts, explore ideas, collaborate together.  These Popplets can be exported as PDF’s or JPG’s.  Once the Popplet is completed, you can set it to presentation mode and present the information as well.