>>"MySpace holds detailed information of every user's personal details, buying habits and pop culture preferences, which would allow advertisers to coordinate highly targeted campaigns."

Ever bought anything from Amazon? They seem to know lots about me, what I've previously bought and what I like.

I presume anyone that is really worried about these things doesn't use a supermarket loyalty card or a credit card either. The only way you are going to avoid data collection and data mining in this century is by buying from market stalls and in cash.