We *still* don't get what your point is.. if you're broadcasting ANYTHING, even if it is just random numbers, people are FREE to collect that information. There's a little button on the side your router that lets you turn it OFF, do that if you just can't stand the idea of people receiving what you're sending.
Nope, you're quite wrong there. You see, at least here in Finland (and probably in other European countries) it is illegal to collect (or to create a database) of identifiable information without a valid reason ( and even then it is restricted). The point is not that you're broadcasting something, the point is that collecting that information and creating a db might be illegal.