Originally Posted by anonobomber
In kde the simplest way to install fonts is to open konqueror and navigate to 'fonts:/' and put them in your personal folder in there. If you want to add them so every user on your system can use them then search for the font installer in 'kcontrol' (KDE control center) and then click the button at the bottom for "Administrator mode" and then click the add fonts button.
Yup. Kioslaves are an abstraction layer around many different system components. In this case, the fonts:/ slave shows a couple of virtual folders, one of them containing the system fonts under /usr/share/fonts or whatever, the other shows our personal fonts, and is the one we can write on. This personal fonts folder shows the contents of ~/.fonts/, the only visible difference when you open fonts:/ and ~/.fonts/ in konqueror is that with the former you are going to see the font names and with the later you are going to see the file names with their .ttf extensions.