A very popular instant messaging system that lets a person send brief text messages up to 140 characters in length to a list of followers. Launched in 2006, Twitter was designed as a social network to keep friends and colleagues informed throughout the day. However, it became widely used for commercial and political purposes to keep customers, constituents and fans up-to-date as well as to solicit feedback.|
After establishing a Twitter account at www.twitter.com, individuals can import their e-mail addresses as well as use the Twitter search to locate and invite people. Twitter messages ("tweets") can be made public and sent to anyone requesting the feed, or they can be sent only to approved followers.
Messages can be sent and received via cellphone text messaging (SMS), the Twitter Web site or a third-party Twitter application. To follow a Twitter feed, the Twitter site and feed name become the URL; for example, Microsoft's Twitter feed is www.twitter.com/microsoft.
Forward that Tweet - ReTweet
Twitter became a viral conduit when users initiated "retweeting," which forwards tweets they get to their followers. People retweet to pass on worthwhile information, and the ease of retweeting can quickly build large audiences. See retweet.
Replies and Direct Messages (DMs)
Initially a one-way broadcast from writer to follower, Twitter added a reply function that turned Twitter into a discussion group service.
Tweets can also be private. Writers can send followers a private message called a "direct message" (DM), and followers can do likewise. Followers can also delete the DMs they sent, making them disappear from the writer's inbox.
@ Signs and # Hashtags
When someone replies to a Twitter posting, they use their Twitter account name preceded by an @ sign; for example, "@JohnDoe."
A hashtag is a # prefix used to group tweets together. For example, people commenting about a Twitter event in New York used #nyctweetup in their postings, and all those messages could be viewed as a group by searching for #nyctweetup.
From Mobile Blogging to Microblogging
Twitter expanded "mobile blogging," the process of updating a blog from a cellphone, into updating a short activities blog (the "microblog") and immediately sending the update to followers. For more Twitter vocabulary, see Twitterese. See microblog.