The Consequence of Getting Your Mobile Experience Wrong
How to Approach Mobile Conversion Optimization
Screen size is important as well. Keep in mind that there shouldn't just three or four general sizes you're creating pages for – soon the market will be flooded with different types of screen sizes, whether it's in your rearview mirror in your car, or in your refrigerator in your house. You should plan how you fit those different width ranges, so that you're not perpetually always playing catch-up.
"Content is Only King…in the Kingdom of Context"
Mobile Mini Toolbox
Mobile Design Tricks
Mobile Call-to-Action Tips
Smartphone users are very task-oriented, whereas tablet users are very interactive-oriented, so they'll be interested in sites that actually have the gestures and movements, etc.