SlideShare just ditched flash for HTML5. This is of course awesome for the sake of HTML5, but it is also awesome for the people using it. This means that it will work everywhere where there is a browser capable of HTML5 (i.e. any modern browser including mobile ones). Unfortunately they did not go responsive on this one, but have separate versions depending on the device (so far I've seen a desktop version and a mobile version, and the mobile version seems to be adapting to the screen size.) They explain the benefit of having a mobile web app instead of going native for mobile in their own words

If you send someone a link to a presentation and they have to download an app to view it, that’s not a pleasant user experience. We want presentations on mobile devices to be accessible to as many users as possible.

Another step away from native apps, and a step into the world of web apps.