SlideShare is a website launched in 2006 that allows users to upload and share PowerPoint, PDF and other file presentations. It aims to be the "YouTube of PowerPoint" by providing a platform for businesses, governments, non-profits and others to spread ideas and collaborate by uploading presentations, joining groups and favoriting or commenting on others' uploads. The document suggests SlideShare could be useful for educators, students and schools by making presentations accessible, enabling collaboration and sharing of projects.