) is an online news and social networking service where users post and interact with messages, called "tweets." These messages were originally restricted to 140 characters, but on November 7, 2017, the limit was doubled to 280 characters for all languages except Japanese, Korean and Chinese.
Registered users can post tweets, but those who are unregistered can only read them.
The decision was also partly due to the fact that the domain was already in use, and it was six months after the launch of twttr that the crew purchased the domain and changed the name of the service to Twitter.
Card Spring enables retailers to offer online shoppers coupons that they can automatically sync to their credit cards in order to receive discounts when they shop in physical stores.
Twitter declared that they would list on the New York Stock Exchange (NYSE), quashing speculation that their stock would trade on the NASDAQ exchange.
It is that, in part, but the insight we eventually came to was Twitter was really more of an information network than it is a social network.
By late November 2010, an average of a dozen updates per day were posted on the astronauts' communal account, @NASA_Astronauts.
Vine videos shared on Twitter are visible directly in users' Twitter feeds.
In July 2014, Twitter announced that it intends to buy a young company called Card Spring for an undisclosed sum.
In addition to the Home tab, the Connect and Discover tabs were introduced along with a redesigned profile and timeline of Tweets.
The site's layout has been compared to that of Facebook.
Users access Twitter through its website interface, Short Message Service (SMS) or mobile device application software ("app").