Upload Powerpoint, PDF, or OpenOffice presentations, and share them with the rest of the world. SlideShare is like the Youtube of the presentation format. -a web 2.0 app with widgets to share presentations on social networks, blogs and bookmarking sites. Slideshare is high on community features and interactivity, bt also allows you to share presentations privately with colleagues and clients. Sunder Thadani. 20170219.