Please note that this is a work in progress.
About
G.O.A.T, is an acronym for the term "Greatest of All Time). It is often used on sites such as reddit and 4chan to attribute someone who is the best at a certain skill.
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(WIP)
The first post on /mu/ was posted on May 30th, 2012. Likewise, the earliest posts on /v/ were both on May 30th,2012.