> I've heard that fake data, like from AdNausium, just becomes noise as the advertisers know the patterns to filter them out.
It's actually much worse. That fake data is dangerous because data brokers don't really care how accurate their data is. Even the fake data AdNausium stuffs into your dossier will be used against you eventually, just like the real data will be. If you get turned down for a job, or your health insurance rates go up, or you have to pay more for something than you would have otherwise, you won't even be told that it was because of data someone collected/sold/bought. You sure won't be told if it was fake or real data and you won't be given any opportunity to correct it.