ThingLink is a free tool for creating interactive images. To create an interactive
image upload an image from your computer to your ThingLink account.
After uploading the image you can add pins to the image.
Each pin that you add to your image can include a video clip, a link to another
site, a block of text, or another image. You can make your images collaborative
by allowing others to add pins to the image. Images can be embedded into
blog posts for students to view and or add their own pins.
Very nice and easy to use!