How It Spread: the public record of viral events

1,309 viral events (films, products, brand campaigns, memes, songs, games and trends) with 19,732 dated timeline events: the first post, the first big account to pick it up, each jump to a new platform, the press, the peak, the backlash and the afterlife. Every case also carries its tagged spread mechanics and a Spread Score (0 to 100) computed from measured attention, under a permanent ID that resolves at https://howitspread.com/id/<ID>. Live version and every snapshot: howitspread.com/dataset. Method: howitspread.com/method. Every case here spread, so the record cannot estimate odds of success; the verification column says how far each case was checked.