All data is valuable. Even something as simple as the MAC address to your iPhones WiFi or Bluetooth chip is worth something to dataprofilers.

This does seem to be true in the age of throwing all data in to training the next iteration of the God Machine, but also, some data is a lot more valuable than other data and I want to know what the incentives are of people who are collecting data in our homes and what the actual data / derived data that they're after.