Twitter celebrated its 9th birthday in March 2015. It has over 300 billion tweets and 241 million active users. Twitter is an effective platform for businesses to promote products, converse with customers, and get feedback. With hashtags, mentions, links, and images, businesses can tweet messages of up to 140 characters to followers. Tweets help build brands, develop relationships with customers, and provide instant, targeted marketing. Planning content, keeping conversations fresh, and using hashtags strategically are some tips for businesses using Twitter successfully.