Tracking == Bad
Why bother? Your ads are going to be adblocked. All your work matching up the perfect bit of offensive crud with my profile will be wasted.
Were your useless "service" fully anonymised, I wouldn't care. However, I don't think it is. You are building a list of very personal information linked to a unique ID. Just because that ID is not my name, does not make that acceptable.
More and more I'm thinking that there isn't so much of a divide between spammers and 'mainstream ' marketing. Maybe we need a Phormhaus to block all sites connected to networks that distribute malware, tracking software / cookies, or produce in-your-face adverts?