Twitter is an online social networking service and micro blogging service that enables its users to send and read text-based messages of up to 140 characters, known as "tweets". Twitter was created in March 2006 by Jack Dorsey and by July, the social networking site was launched. The service rapidly gained worldwide popularity, with over 500 million registered users as of 2012, generating over 340 million tweets daily and handling over 1.6 billion search queries per day. Since its launch, Twitter has become one of the ten most visited websites on the Internet, and has been described as "the SMS of the Internet." Unregistered users can read tweets, while registered users can post tweets through the website interface, SMS, or a range of apps for mobile devices. Twitter Inc. is based in San Francisco, with additional servers and offices in New York City, Boston, and San Antonio.
Many social networking Web sites have lots of bells and whistles. Sites like Facebook & LinkedIn let users build profiles, upload pictures, incorporate multimedia, keep a blog and integrate useful or bizarre programs into homepages. But Twitter is the company that continues to explode with growth yet is the simplest service available in the social media landscape.
So what does Twitter do? When you sign up with Twitter, you can use the service to post and receive messages to a network of contacts. Instead of sending a dozen e-mails or text messages, you send one message to your Twitter account, and the service distributes it to all your friends. Members use Twitter to organize impromptu gatherings, carry on a group conversation or just send a quick update to let people know what's going on. Registered users can enter their own text messages with a maximum of 140 characters. These text messages are displayed including the people that follow this user. They are also calling without being logged onto Twitter and/or to follow the registered user. The editor of the news available on the website of the service with a picture as the sole author its contents. The posts are often from the first-person perspective written. This micro-blog is a writer and reader for easy-to-use real-time medium for the representation of aspects of one's life and opinions on specific topics. Comments or discussion the reader to a post are possible. Thus, both the medium for the exchange of information, ideas and experiences as well as other forms of communication are used. The act of writing on Twitter is called a "tweet.” Again, simply put a Tweet is a message sent on Twitter. (To send or receive a Tweet, you have to create a free account with Twitter).
eMarketer estimates Twitter will earn $582.8 million in global ad revenue this year, $950 million next year, and $1.33 billion in 2015. According to its boosted forecast, more than half of Twitter's ad revenue -- about 53 percent -- will come from mobile advertising this year, up from virtually no ad revenue from mobile in 2011. And mobile is where Twitter will see the most growth over the next two years, eMarketer said. By 2015, more than 60 percent of Twitter's ad revenue should come from mobile. The launch of Twitter's Ads API also will contribute to growth this year and allows Twitter to deliver ads seamlessly across multiple devices at high volume. eMarketer estimates Twitter will earn $308.9 million in mobile ad revenue in 2013, which is more than the company earned in total, from any ad type, in 2012. That year it made $138.4 million from mobile ads.