"Last year I was invited to submit a paper to the
Encyclopedia of Library of Information Science about Open Source
Software, and I decided to use that paper as a basis. After editing
the paper, updating the links, and downloading lots of new
information, I submitted a revised paper that justified the $1T USD
number. And because there's been so much interest in this number,
I've revised that paper yet again, so you can all read the
analysis."