This is hardly a new idea. You could argue that many of Dickens's novels were written this way, bit-by-bit through installments in the newspaper. The format led to the cliffhanger nature of his stories.
Look at NaNoWriMo or DailyLit for current examples
Thanks! I'm sure they existed, I just haven't seen a lot of it yet. Also, that is really cool about Dicken's