ED meaning in Academic & Science ?

Encyclopedia Dramatica (ED; also spelled Encyclopædia Dramatica; or referred to otherwise by the standalone ligature æ prominently featured in its logo) is an online community centered around a wiki that acts as a "troll archive". It first opened under the domain name encyclopediadramatica.com on December 10, 2004.

Its articles lampoon topics and current events related or relevant to contemporary internet culture in an encyclopedic fashion. It often serves as a repository of information and a means of discussion for the internet subculture known as Anonymous. Encyclopedia Dramatica celebrates a subversive "NSFW" "trolling culture" and documents internet memes, events such as mass organized pranks—trolling events called "raids", large-scale failures of internet security, and criticism by those within its subculture of other internet communities which are accused of self-censorship in order to (in their view cynically) garner positive coverage from traditional and established media outlets. The site also hosts numerous pornographic images, along with content that is "misogynistic, racist, and homophobic".

Julian Dibbell, in Wired, described Encyclopedia Dramatica as the site "where the vast parallel universe of Anonymous in-jokes, catchphrases, and obsessions is lovingly annotated, and you will discover an elaborate trolling culture: flamingly racist, homophobic and misogynistic content lurks throughout, all of it calculated to offend." The site is also known for its pervasive clickbait advertisements, in addition to its having almost none of the rules expected on other similar communities. Ninemsn described Encyclopedia Dramatica as:

Wikipedia's evil twin. It's a site where almost every article is biased, offensive, unsourced, and without the faintest trace of political correctness. A search through its archives will reveal animated images of people committing suicide, articles glorifying extreme racism and sexism, and a seemingly endless supply of twisted, shocking views on just about every major human tragedy in history.

On April 14, 2011, the original URL of the site was redirected to a new website named "Oh Internet" that bore little resemblance to Encyclopedia Dramatica. Parts of the ED community harshly criticized the changes. On the night of the Encyclopedia Dramatica shutdown, regular ED visitors bombarded the 'Oh Internet' Facebook wall with hate messages. The Web Ecology Project published a downloadable archive of Encyclopedia Dramatica content's the next day. Besides this archive, fan-made torrents and several mirrors of the original site were subsequently generated. Based on these archives, the site has repeatedly gone offline and come back under new domain names, with the website currently being hosted at encyclopediadramatica.online. Between 2013 and 2019, the website was hosted under various top level domains: .rs, .ch, .es, and .se, with each domain bearing the second-level domain "encyclopediadramatica".