Abstract
In this post I have tested several solutions for slide sharing. I found the free product of SlideBoom to be superior.

Introduction
Scientific presentations are nowadays delivered in a form where the focus is on the presentation of slides. Old-fashioned people claim  – and complain – that a presentation with blackboard and chalk is a much better form of communication. This almost obsolete style is to be preferred in a limited number of cases only. For instance when you are lecturing to students and you really want to go slowly through a sequential line of arguments, like a full mathematical derivation. In all other cases the era of PowerPoint is a blessing. Both for presenters and for audiences.

The digital formats of a slide presentation allows for reuse by the presenter himself, and for reuse by others. Slide sharing is becoming fashionable. In this post I limit myself to the sharing of the presentation file. So I am not discussing full-blown video presentations.

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