I understand this might sound weird but I just don't think about fonts. In my head that is designer territory and ever since I realised I was colourweak and couldn't be one anyway I stopped even trying.

I know three types that I use: serif, sans-serif and monospaced programming fonts.

I do however care a lot about keyboard layouts, keyboard shortcuts and general snappiness of the OS so I am definitely a programmer ;-)

Edit: and I'm not a graphics programmer so I'm not an "art dealer" anyway, more like someone in logistics. :-)

There are definitely art dealers that don't care about what the paintings look like, and just want what sells. Personally, as long as it's readable...

This is one of the things I really love about Ubuntu. Ubuntu monospace is the most readable and unambiguous monospace font I've ever seen.