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.

Scientists’s desk
What general office software is useful for scientists? I come to the following enumeration: an email client, a calendar manager, a browser, a document formatter (for non-scientific papers), a spreadsheet and presentation software. Microsoft sells software providing all these functionalities, and indeed many scientists use the Microsoft products Outlook, Internet Explorer, MS-Word, MS-Excel and MS-PowerPoint. However, with free - technically speaking - superior products Google is now challenging the leading position of Microsoft in this traditionally Microsoft territory

Tired of Microsoft
After having followed each and every update of the MS-DOS and Windows operating systems for the last thirty (30) years I have had it with Microsoft. I am not going to defend the Redmond boys any longer when my colleagues shame them. On the contrary: I will give my peers additional arguments.