The more information any one entity has about any individual, the more accurate a profile they can create. The more thinly spread your metadata is, the harder

The more information any one entity has about any individual, the more accurate a profile they can create. The more thinly spread your metadata is, the harder it is for any one corporation to create a profile. Clearly there is no perfect solution, it depends on what sort of privacy risks you are trying to mitigate.