Pinterest completes the trilogy of online marketing because it shares pictures. When social marketing programs are utilized in conjunction with each other, than business can use the power of each to highlight their pinterest campaigns. Facebook allows you to find friends, Twitter allows you to tweet your thoughts and pinterest allows you to share photos... both as a pin board or as an individual pin.
Pinterest can also be used to attract consumers to online stores via the pictures that are shared on a businesses pin board. Opportunities are limited to specific niche but creativity can bridge those gaps.