Twitter

Twitter is a messaging service and app that is available for iOS, iPadOS, tvOS, Android, and web browsers. The iOS app was launched in October 2009.

Features
Registered users are allowed to send and receive short posts called "tweets", which can be up to 280 characters long (formerly 140) and can include links to relevant websites and resources.

Twitter users can follow other accounts of people and organizations. Such an account will be accompanied by a blue checkmark if the identity has been verified by Twitter. Tweets from a "followed" account will automatically appear in a follower's "timeline". An account's pattern of following and usage will result in the of tweets and events from people and organizations with similar academic and personal interests to the user. Twitter states that its curation team is not responsible for driving revenue, user growth, or relationships with its partners.

Twitter announced in June 2018 that it was investing in and  detection, to prevent "",, hateful conduct, and violent extremism. In 2019, the company was removing over 6 to 7.5 million "fake" accounts per week.

History
Twitter was co-founded by, , , and in 2006. Dorsey served as CEO from 2006 to 2008, and again from 2015 until resigning in November 2021, stating his "regret" for Twitter's role in the centralization of internet usage. On March 14, 2022, CEO  acquired a 9.2% stake in Twitter, making him the single largest shareholder. Musk had expressed his disappointment in current CEO, who had succeeded Dorsey.

System requirements
Twitter is also supported by major web browsers that have received security updates within the previous year.
 * iOS 14 or later
 * iPadOS 14 or later
 * macOS 11 or later
 * tvOS 14 or later