Social Networking
Twitter and Facebook pages are now seen as essential as a method of relationship management.
Each day a higher percentage of compaies’ marketing budgets are going online.
Large and small companies alike are now using social networks including facebook, twitter and linked-in to get their message across.
Facebook uses "fan/business" pages which allow companies to publish information and gain feedback from customers. See live Facebook Integration
Twitter is also useful as once you have gained a network of followers, you are then able to “broadcast” information easily.
You can even have your own Twitter Feed on your site.