I want to install the newest version of Mono on my Ubuntu 13.10 installation, but obviously it requires me to download a lot of packages from the Debian website, which is not ideal as it is hard to fix up dependencies. (+ They'll all be marked as manually installed)
I am aware I can install mono from source but I'd prefer not to.
How do I add a Debian PPA to my package managers, so I can just install it with Aptitude or APT?