Am I glad to be learning/writing code on a proprietary system because its goals are so crystal clear i.e bottomline = commerce. Then I came across this line that says it all "In 2004, open source software saved large companies an average of $3.3 million ", but this is not what I was looking for. I'm searching on the total revenues generated by Open Source companies so why the above line come up is really surprising, which then lead me to another document...... the research goes on. Seems I'm heading into a well organised commerce industry.