Welcome to working with large corporations. Not only does the left hand not know what the right hand is doing, the fingers are pretty much in the dark, too.
Thanks for the comments and don't get us wrong, we fully agree that everyone's privacy should be respected. This is why we started this endeavor by consulting a crack team of lawyers and by surveying a lot of users to understand where the line is drawn by both.
We went for the less invasive option, and when all was said and done - almost all we did that exposed any 3rd party details was to show you the name of the person that is calling you. After all, if they are calling you they either want to share their name with you anyway or they are shady to begin with.
Again no problem with having clear directions and following them. Huge problem with arbitrary, terminal decisions that come without dialogue or an opportunity to understand what is deemed wrong.