Social media engagements help you earn SAUCE bonuses by participating in specific activities and campaigns hosted by the Sauces community. By engaging with Sauces on platforms like Twitter, Facebook, and Instagram, sharing content, participating in events, and promoting the Sauces app, you can receive additional SAUCE tokens as rewards. These activities not only increase your visibility within the community but also provide extra incentives to stay active and involved in the Sauces ecosystem.