I have a meeting coming up very soon with a client, in which they've
asked me to explain the difference between free software/formats,
e.g., Ogg Vorbis, and proprietary software formats, e.g., RealMedia.
They represent a large university that's been using a proprietary
platform for their webcasts and is now considering a change. I'm
marshalling my arguments and I could use some help. Do you know any
really good and simple essays and arguments for using free software
and formats rather than proprietary ones? Please include any solely
pragmatic arguments, too.