Question:  U mad was added to what crowdsourced online dictionary of slang words and phrases In 2004
Context: "U mad" or "you mad" is an internet catchphrase commonly associated with trolling.  The phrase is used both as a statement and a question.  It was popularized after an incident on "The O'Reilly Factor" involving rapper Cam'ron and record producer Damon Dash in 2003.  Host Bill O'Reilly was debating the effect of rap music on children.  When O'Reilly began to interrupt Dash, Cam'ron stated, "Why don’t you want to let him talk?  You mad.  You mad."  In 2004, the phrase was added to Urban Dictionary, citing Cam'ron as the coiner. The Double-Tongued Dictionary is an online dictionary.  It catalogs a growing lexicon of undocumented or under-documented words on the fringes of English, focusing on slang, jargon, and new words. Sesli Sozluk is a multilingual online dictionary, primarily English to Turkish and Turkish to English.  As of February 2009, it has a rank of 6 among all online dictionaries worldwide.  German, Italian, French, Spanish, Greek, Russian, Danish, Dutch, Polish and Portuguese translations are also provided.  The online dictionary also can be used in PDAs, SmartPhones, any phone supporting a web browser. Urban Dictionary is a crowdsourced online dictionary of slang words and phrases that was founded in 1999 as a parody of Dictionary.com and Vocabulary.com by then-college freshman Aaron Peckham.  Some of the definitions on the website can be found as early as 1999, but most early definitions are from 2003.  At the start of 2014, the dictionary featured over seven million definitions, while 2,000 new daily entries were being added.  In November 2014, the Advertise page of the website states that, on a monthly basis, Urban Dictionary averages 72 million impressions and 18 million unique readers.  Anyone with either a Facebook or Gmail account can make a submission to the dictionary, and it has been stated that entries are reviewed by 20,000 volunteer editors. Military slang is colloquial language used by and associated with members of various military forces.  This page lists slang words or phrases that originate with military forces, are used exclusively by military personnel, or are strongly associated with military organizations. Grant Barrett (born 1970) is an American lexicographer, specializing in slang, jargon and new usage.  He is also co-host and co-producer of the nationwide public radio show "A Way With Words," author of "Perfect English Grammar" (Zephyros Press, 2016, ISBN  ), and editor of the "Official Dictionary of Unofficial English" (McGraw-Hill, 2006, ISBN  ), the "Oxford Dictionary of American Political Slang" (Oxford University Press, 2004, ISBN  ), and the award-winning web site Double-Tongued Dictionary.  He is also the vice president of communications and technology for the American Dialect Society, a former member of the editorial review board for the academic journal American Speech, former editor of the journal's "Among the New Words" column, and a founder of the online dictionary Wordnik. A bilingual dictionary or translation dictionary is a specialized dictionary used to translate words or phrases from one language to another.  Bilingual dictionaries can be "unidirectional", meaning that they list the meanings of words of one language in another, or can be "bidirectional", allowing translation to and from both languages.  Bidirectional bilingual dictionaries usually consist of two sections, each listing words and phrases of one language alphabetically along with their translation.  In addition to the translation, a bilingual dictionary usually indicates the part of speech, gender, verb type, declension model and other grammatical clues to help a non-native speaker use the word.  Other features sometimes present in bilingual dictionaries are lists of phrases, usage and style guides, verb tables, maps and grammar references.  In contrast to the bilingual dictionary, a monolingual dictionary defines words and phrases instead of translating them. B'hoy and g'hal (meant to evoke an Irish pronunciation of "boy" and "gal", respectively) were the prevailing slang words used to describe the young men and women of the rough-and-tumble working class culture of Lower Manhattan in the late 1840s and into the period of the American Civil War.  They spoke a slang, with phrases such as "hi-hi", "lam him", and "cheese it". Slang refers to words, phrases and uses that are regarded as very informal and often restricted to special context or peculiar to a specified profession class and the like.  Slang words are used in specific social groups, like teenagers. This list of "Afrikanerisms" comprises slang words and phrases influenced by Afrikaans and other African languages.  Typical users include people with Afrikaans as their first language but who speak English as a second language and people living in areas where the population speaks both English and Afrikaans.  Many of these terms also occur widely amongst ethnic/native South Africans, and others living in neighbouring countries such as Zimbabwe, Botswana, Zambia etc.  These terms do not occur in formal South African English.  Note when the letter "g" is either the first or last letter of the word or syllable, it is pronounced as an unvoiced velar fricative in the back of the throat.  Note, words ending in "-ng" are pronounced identical to those in English.  Note, in most cases of plurals ending in -nde, the "d" falls away in the informal pronunciation and spelling and the "n" is duplicated in sound and re-positioned within the degrees of comparison.  For example: Tande (plural of tand; "tooth"), formal = "tande", informal = "tanne".  In singular words' syllables ending in "-d", "-nd" and "-heid", the "d" is always pronounced as a "t".  For example: "ge-son(t)-hei(t)" (gesondheid, "health").  Note, the English term "slang" is used strictly in its English pronunciation in context, as the Afrikaans word of the same spelling (though pronounced as "slung") translates as "snake".
Answer: Urban Dictionary