For ideal typography, getting the typography of your website right does not mean you need to indulge yourself in any sort of hard slog. It simply is an approach where you break certain monotonies, and also take along certain time-tested rules.
The Typetester is an online application for comparison of the fonts for the screen. Its primary role is to make web designer’s life easier. As the new fonts are bundled into operating systems, the list of the common fonts will be updated.