1) Customer expectations for social media interactions with brands have increased significantly from 2009 to 2010, with more customers believing brands should use social media to engage with customers and solve their problems. 2) There are different types of social media users - advocates, opinion sharers, participants, and the informed - and advocates in particular influence purchase decisions while spreading brand messages without being prompted. 3) To properly engage customers, brands need a social media presence across multiple networks to break through clutter, and should share relevant, value-adding content 3-5 times to ensure customers believe the brand's message.