Advertisers know who you are, where you go, when you go there and how much time you spend where you are: Advertisers will be able to upload email lists to target customers and similar audiences with ads on search, Gmail and YouTube.
This shows, yet again, that the claims about the data being anonymized, are false. This capability enables advertisers and those buying advertising time/space from (in this case) Google, to say “here’s an individual I want to show my ads to”(*).
What was that about “we don’t know who you are, you’re just an anonymous number to us“, you say?
When the number is you, uniquely you, then you’re not anonymized, instead, you’ve been given an (additional) alias which makes it easier to be identified, not harder.
IvyDNS prevents you from ever being recorded as one of these (non-)’anonymous numbers’ in the first place. And even if you were recorded in the past, it makes your future footprints melt away before anyone gets a chance to see them.
(*) Interestingly, this also opens up a mechanism for those using advertising networks as delivery mechanisms for malware, to target very specific individuals for infection with their malware.