Do you have a mobile site? It's not just a showcase but a revenue enhancer.
Many retailers have implemented mobile sites thinking if nothing else they will make the retailer look good and "with it."
But mobile sites can significantly help conversion rates. If a retailer doesn't take mobile lightly, the bottom line will definitely be supplemented by m-commerce.
A retailer building a mobile site should make that site look good. With the small screens on mobile devices, appearance does matter.
Promote your mobile site. So many retailers do not have mobile versions of their sites that people may assume you do not either. You might consider mentioning that on your PC site, so people will know they can browse your selections when not on their main computer.
Keep your mobile site current. You don't need to make major changes every day, but updating your mobile site frequently is a good thing.