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Danah Boyd Twitter-a microblogging service that enables users to post messages ("tweets") of up to 140 characters-supports a variety of communicative practices; participants use Twitter to converse with individuals, groups, and the public at large, so when conversations emerge, they are often experienced by broader audiences than just the interlocutors. This paper examines the practice of retweeting as a way by which participants can be "in a conversation." While retweeting has become a convention inside Twitter, participants retweet using different styles and for diverse reasons. We highlight how authorship, attribution, and communicative fidelity are negotiated in diverse ways. Using a series of case studies and empirical data, this paper maps out retweeting as a conversational practice. 1.

"Tout a commencé lorsque The telegraph a annoncé l'éventuel lancement d'un service de vidéo-tweet dans un article ce matin. Cet article explique en effet que les fondateurs de Twitter travaillent actuellement sur un système de partage de vidéo directement intégré à la plateforme de microblogging, ce qui permettrait de remplacer les services tiers tels que Twiddeo ou encore Tweetube, qui peinent à s'imposer puisqu'ils ne permettent que le partage de liens menant vers leur propre service. "

Some teachers are experimenting with the popular microblogging tool as an effective way of distributing assignments and engaging students in content and collaborative lessons.