MSU Red Cedar Message Board

As most of you know, the focus on mobile web design is a critical focus for nearly every company planning to create or update web tools. Whether you take the responsive approach with CSS3 or you design a separate site for each device type, the importance of functionality on a mobile device is only growing.

Today I was surfing slickdeals.net and came across a deal at Walmart. This was the very first time I recall reaching Walmart's mobile site, but it may be the best all around mobile site I've seen. What do you think?

What are some of your go-to sites for modeling your mobile approach?