It seems a pretty sad world to me. The sole fact that we are talking about offense and defense is harsh. An individual needs his fundamental rights to be respected, and at the same time, a service provider needs data to pursue improve his product. We should consider both to hope for a balance. IMHO, the problem with today's solutions is that the individual is set out of the equation because data are "considered" anonymous. We take for granted something that may at least deserve more attention. By promoting consent as a first-class citizen, we can reposition the individual at the center again.