This blog discusses the importance of mobile websites.
Most enterprises and companies today are interested to put up websites that render well on mobiles. Not every website can render properly on a mobile/smartphone screen. Some look terrible because their layout gets all jumbled up on a smaller screen size. Text becomes unreadable, buttons get hidden and menus look ugly.
So a lot of effort has to go into making a website render beautifully on a mobile.
Here is a list of 30 sites that are mobile optimized and look good on any mobile screen.
http://www.topdesignmag.com/30-examples-of-mobile-optimized-websites/
And here are 10 most viewed mobile sites of the year 2011:
http://www.opera.com/press/releases/2011/12/20/
More examples including that of stunning designs are over here:
http://www.mobileawesomeness.com/