Just in case you don't know about free software, here are some links that may
be of interest to you.
* What is free software? http://www.gnu.org/philosophy/free-sw.html
* Version 3 of the GNU General Public License
http://www.gnu.org/licenses/gpl.html and its FAQ
http://www.gnu.org/licenses/gpl-faq.html
* A list of common free software licenses
http://www.gnu.org/licenses/license-list.html
* Main free software foundation websites http://www.fsf.org/ and
http://www.gnu.org/, and their campaigns for computer users' freedom
http://www.fsf.org/campaigns/
Free software is all about keeping you free. Opera doesn't do that. They
don't give you all of their source code and there are other problems with
their EULA as previously mentioned. Free software guarantees that you will
always have the freedom to use, study, modify, copy, and redistribute the
software in any form — it ensures that you control your computer and not
some company.
Welcome to freedom! May your stay not be as buggy or disastrous as mine. (I
lost almost all my files installing Trisquel for the first time, and I'm
still using it.)