http://bokardo.com/archives/five-principles-to-design-by/
1) Technology Serves Humans- If someone can’t find something on a web site, it is the web designer’s gault!
2) Design is not Art- Great Design is dependent upon the age in which it is made and the problem which it is meant to solve. Art is timeless. Good Design is something that works well.
3) The Experience Belongs to the User- The designer is at the service of the user.
4) Great Design is Invisible- Bad design is easier to spot then good design. It is awkward, difficult, & complex.
5) Simplicity is the Ultimate Sophistication- Knowing what to keep & what to throw away… less is more!
http://www.smashingmagazine.com/2007/03/08/best-of-february-2007/