Reblogging is a digital action that involves reposting or sharing content from another user’s blog[4] or social media[1] post while maintaining attribution to the original source. Its roots can be traced back to the viral nature of e-mails and chain mails in the 1980s and 1990s. The practice evolved with the development of various social media platforms, each introducing their own version of reblogging, such as retweeting on Twitter[3] and sharing on Facebook[2]. The features allow users to engage in multi-layered conversations, disseminate information swiftly, and offer their commentary on topics. The advent and popularity of reblogging have also sparked research into user behavior, content sharing, and information dissemination, and have raised legal considerations in the social media industry. This term is frequently associated with the spread of news, both true and false, and the sharing of visual or written content in the online sphere.
Reblogging (or, in Twitter parlance retweeting) is the mechanism in blogging which allows users to repost the content of another user's post with an indication that the source of the post is another user.
It was first developed by Jonah Peretti at Eyebeam Art and Technology Center's R&D program under the project 'Reblog' (from where the term originates) as an open-source tool for individually-run blogs. Tumblr then built it into their social network for re-sharing posts within the network, and similar features ("Retweet" on Twitter, "Share" on Facebook) then followed.
For a number of microblogging and social networking services, reblogging has become a means of both social bookmarking and user commentary; unlike social news services like Digg, Slashdot, and Reddit, however, reblogging typically does not involve a centralized "front page" to which the highest-ranked post is appended.
Reblogging (and the increased attention paid to the indexing and encouragement of reblogging) has become a major feature of many social networking sites and content-hosting services, and it has also become a potent means of secondary content promotion and audience measurement whereby links to external content are syndicated across multiple profiles and the reposts are indexed as a measurement of currency and relevance.