people you can reach, and anywhere you can reach folks is part of your platform. All of that’s great, but there’s a problem with relying on booksellers, social media, or various other online communities for your platform. Anyone have a guess what it is? Bueller? Bueller? So many writers fail to understand this to their significant detriment: All of the above are examples of platforms owned by other parties, and it’s a big mistake to rely on a platform you don’t own, and hence control.