On 14th April 2003 I released a newsletter component for Mambo 4.0 which at the time was one of the only "extras" you could get for a Mambo web site and yet today there are approaching 4,000 extensions for Joomla.
That newsletter component had to be installed manually via ftp and phpmyadmin was required to create the database tables and add the component to the interface. It was also the very first extension to use a WYSIWYG editor - at the time you needed to write all your content using pure html.
What do you use for backups of your Joomla web site? Until Joomla 1.6 (thanks Sam for adding this) there has been no backup routine built in to Joomla and yet backing up your website is the most important thing you should do.
No matter what your web host offers as a backup service this is your responsibility and only yours. Backups are too important to rely on anyone but yourself.
The web was meant to be read, not squished.
This isn't the way to test a responsive design.