A short reference on how to install Opera on Debian etch.
Edit /etc/apt/sources.list, add:
deb http://deb.opera.com/opera etch non-free
Then import the public keys for the opera repository:
gpg --keyserver subkeys.pgp.net --recv-key 6A423791 gpg --fingerprint 6A423791 gpg --armor --export 6A423791| apt-key add -
Then run “apt-get update && apt-get install opera” and live happily ever after 😀