In Indonesia, consumers began mixing together several orders of McDonald’s soft serve ice cream into a dessert mashup. Videos of this quirky development quickly went viral, and the trend spread to Thailand. Rather than worry about losing control over its carefully crafted image, McDonald’s encouraged the activity by creating an online video ad campaign around their customers’ videos. Welcome to the crazy world of shoppertainment, which BCG projects will grow into a $1 trillion market in Asia by 2025.