How-To Geek

At Sign (@)

The at sign (@), originally and traditionally called the ampersat, is a symbol used to separate the user from their domain within an email address, such as admin@google.com, where the user is “admin” and the domain is “google.com”.

Through the 1970s and well into the early 2000s, that was the extent of the @ symbol’s role in mainstream computing and internet use. Twitter introduced the idea of the @ as the start of a Twitter username (e.g. @HowToGeek) and many modern discussion forum software suites use the @ for easy designation of who a reply is directed at (e.g. @Bill Smith: I think that…)

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