Here is a link to a wonderful article about how businesses are able to utilize Facebook and Twitter.
Word of Mouth Marketing
Moonfruit offered 11 Macbook Pros and 10 iPod Touches to celebrate its 10th anniversary. To qualify, contestants had to send a tweet using the hashtag #moonfruit. One month following the completion of the contest, Moonfruit site traffic was up 300 percent and sales increased by 20 percent — all with a meager investment of $15,000. The company also realized SEO benefits, by landing on the first results page of Google for “free website builder.”
Source: Brian Solis
I really believe that this article exemplifies how powerful social media can be for businesses. The marketing world is in the dawn of a new age, and with these new avenues to reach people when and where they want to be reached, results can be outstanding.