SlideShare is a social media platform for sharing presentations that was founded in 2006 and acquired by LinkedIn in 2012. It has over 51 million monthly visitors. Users can create profiles to share content like PDFs and Office files, follow other users, comment on content, and download or reuse files that others share. Content on SlideShare can be made public or private, and users can integrate other social media like Twitter and YouTube into their profiles. Presentations on SlideShare can also embed videos and sync audio slides.