The document discusses how customer service has changed dramatically from 1979 to present day due to the rise of social media and online customer interactions. It notes that dissatisfied customers online can now tell thousands of friends about a bad experience, versus only a few friends in the past. Companies must now respond to customers quickly on public forums like Twitter or risk negative brand mentions spreading widely. Examples are given of companies that actively engage with customers on social media to resolve issues and retain business. The conclusion emphasizes the importance of developing personal relationships with customers online through channels like Twitter and Facebook.