https://www.techdirt.com/articles/20211020/15563847785/content-moderation-case-studies-snapchat-disables-giphy-integration-after-racist-sticker-is-discovered-2018.shtml

Summary: Snapchat debuted to immediate success a decade ago, drawing in millions of users with its playful take on instant messaging that combined photos and short videos with a large selection of filters and "stickers." Stickers are graphics that can be applied to messages, allowing users to punch up their presentations (so to speak).

Snapchat’s innovations in the messaging space proved incredibly popular, moving Snapchat from upstart to major player in a few short years. It also created more headaches for moderators as sent messages soared past millions per day to billions.