Changes

* Update CFP wording

* Friday - Technical Focus

** 4 tracks x 6 slots

* Saturday - User Focus

** 4 tracks x ? slots

This year, we particularly welcome talks on open source :

* Cloud & Virtualization

* Mobile

* Open Source Business Models and Commercialization

* Open Hardware

* Green IT

* Linus Torvalds (Linux) ***

* Mark Surman (Mozilla) (CT)

* Mark Shuttleworth (Canonical) (CT)

* Shawn Powers (Linux Journal) (DA)

* Andrew Morton (Linux) (CT)

* Larry Wall (Perl) ***

* Eben Moglen (SFLC) ***

* Michael Geist (UofO) (CT)

* Michael Shaver (Mozilla) (CT)

* Tim O'Reilly (O'Reilly Media) (CT)

* Evan Prodromou (identi.ca) ***

* Jim Whitehurst (Red Hat) (CT)

* Alan Cox (Intel) (CT)

* Jon "Maddog" Hall (Linux International) (CT)