Twitter is a microblogging and social networking service based out of California in the United States. Founded in 2006, it has over 200 million users. The website allows users to post 280-character messages along with photos, links and videos. Users can follow and interact with other users, as well as post their own tweets. They can also search for tweets by keyword, location, or hashtag. Tweets can also be shared with other networks such as Facebook and Google+. Twitter is a great way to stay connected with friends, family, and colleagues. It can also be used to spread news, share ideas, and stay up to date on current events. Users can use hashtags to join in conversations and follow topics they are interested in. Twitter is also a great tool for businesses to use in order to promote their products and services. Companies can use Twitter to reach out to their customers and potential customers, as well as engage with them in real-time.