Yet another of these presentation slides website. What most people use this site is to create presentation files and have them shared over the Internet. This way, there is no need to store the files on a thumbdrive or bring along a laptop. There is no worry about incompatible files or that someone's else computer has a difference operating system. It works on a browser. In fact, you can create the presentation file directly on the browser. Cool, isn't it? Especially for those who have to visit clients to do presentation. 280 Slides allows you to import existing powerpoint files and edit them on your browser. Furthermore, it comes with numerous quality themes to choose from, making your slides even more impressive. It also comes with autosave and autorecovery options, so you don't need to worry about losing all your hard work. Oh, did I mention it is free?