This week Google started promoting mobile optimized websites in their search results:
Frankly I'm amazed it's taken Google this long to implement, however for mobile users it's a welcome addition to the search experience that alleviates the pain of clicking on a link only to find a desktop site at the other end. Now the consumer is in control and armed upfront with a Google endorsement of mobile readiness. This strategy is part of an evolution of preemptive warnings for mobile search users. Earlier this year Google started warning mobile users of destinations using Flash or destinations with broken links that would result in a re-direction to the destination homepage.