web 2 and applications

As I wander through the Web 2.0 world and stop to play with a new tool.... I always reflect on those tools that have been soooo successful I couldn't live without. Today wandering through Slideshare I found this - a slideshare plug in for PowerPoint 2007. I am a great believer in professional sharing but I see this as also an opportunity to work with students and recap digital citizenship and creative commons.