How does Reddit's 'AITA' forum work?

There are few places on the internet like “Am I The A******?”. The Reddit forum, often referred to by its more PG-rated abbreviation, AITA, is a rarity among social media sites. It’s a community where over 3.2 million people — plus countless anonymous “lurkers” — come together to deliberate on a simple question. Redditors use the page to share their deepest, most intimate personal dilemmas…. anything from “AITA for refusing to stop wearing my favorite pair of pants?” to “AITA for not attending my sister’s wedding after telling her I’d go?” . Then, commenters weigh in to decide whether or not the poster is the a******