TypeBrewer is a site about font choices in mapmaking. “TypeBrewer offers a quick and easy way to explore typographic alternatives and see the impact that various elements of type have on the overall look and feel of a map. TypeBrewer is designed for mapmakers who want to learn more about map typography and get practical design specifications for starting a map project.” Using a Flash-based interface, you can select different type styles and see the impact of font size, density (how much is labelled) and tracking (letter spacing). Via La Cartoteca.