[ChuckMcM]

A hundred times this. One big red flag is if you have a 'free' stack which does something useful for you. It is important to ask if it does something 'useful' for the stack developer who gave it to you to use. Perhaps the most canonical example of this was Facebook giving away "free" internet to under served groups in India. At what point will we have an organization giving away 'free phones' to people as a way of developing demographic data?

On the plus side I think more and more developers and users are becoming aware of the dangers and the actual cost to their privacy and/or brand that these 'free' things expose and so it will perhaps get better.