Glogsters are online, interactive posters that allow users to incorporate text, images, videos, and audio. The document discusses how teachers can use Glogsters as an instructional tool by creating Glogs containing full teaching units or linking assignments. It also explains that students can use Glogsters to foster creative expression through the multi-sensory medium. Basic instructions are provided on setting up accounts, adding layout elements, text, images, and multimedia content to Glogs.