Then why bother with transparency? Transparency doesn't change the way you work. Before I didn't know what you did with my data; now I just know what you do with my data. You still do the same thing when you deal with my data; it doesn't change the way you work. You just inform your client that now you're transparent. It doesn't give anything. If I refuse for my data to be exchanged, I may see my service refused then. I won't have access anymore to my service because you need my information as exchange currency for the services you sell to advertising.