A Tweet is a 140-character message posted via Twitter.Definition in Posting a Tweet
A Retweet is a re-posting of someone else's Tweet. Twitter's Retweet feature helps you and others quickly share that Tweet with all of your followers.What is a Retweet? in FAQs about Retweets (RT)
The # symbol, called a hashtag, is used to mark keywords or topics in a Tweet. It was created organically by Twitter users as a way to categorize messages.Definition in Using hashtags on Twitter
Trends are determined by an algorithm and are tailored for you based on who you follow and your location. This algorithm identifies topics that are immediately popular, rather than topics that have been popular for a while or on a daily basis, to help you discover the hottest emerging topics of discussion on Twitter that matter most to you.How are Trends determined? in FAQs about Trends on Twitter
Twitter is a real-time information network that connects you to the latest stories, ideas, opinions and news about what you find interesting.An information network in The fastest, simplest way to stay close to everything you care about.
Postings made on the social media website Twitter, considered collectively.Twittersphere in Definition of Twittersphere in English
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