Social media allows people to share information and express themselves online through connecting millions worldwide. Companies use social media to build customer relationships, promote new products and services, and get customer feedback. Examples include Starbucks sharing upcoming events and media on its fan page, Pepsi allowing customers to share opinions and get updates, and MAC Cosmetics uploading event videos and customer product demonstrations. Google AdWords is an advertising program where ads appear at the top or side of search results pages targeted to specific keyword searches.