Mobile social networkers represent 11% of all US online adults, and their ranks are growing. This emerging segment exhibits attractive mobile behaviors that interactive marketers can exploit. Mobile social users show greater responsiveness to ads on their cell phones, purchase mobile content and services at a greater rate, and access the mobile Internet much more often. Marketers who seek to stay connected with and profit from these valuable customers must provide mobile-friendly sites, drive new social experiences, take risks, and offer content that can be shared via mobile phones.