[tdd]

Even though they are bare bones, they still require some design knowledge to be very successful. The usage of typographic hierarchy and grids can be seen in all of them - some more successful than others.

Being simple is just as hard as creating more 'fancy' objects, I would suggest having a look into swiss design/ new international style where your sure to be inspired and help see just how people use layouts and typography to create simple designs which work.

[evancaine]

Just to be clear, I wasn't equating simple with easy.

Thanks for the tip re: swiss design. More info: http://en.wikipedia.org/wiki/International_Typographic_Style