[davidfischer]

Ya, other types of retargeting like this are also likely. The jump from visiting a website to an advertiser does physical mailings isn't a big one (political advertising uses this a lot). Long story short, she was probably retargeted based on her actions and probably not based on the insurer or provider doing anything illegal.

Edit: I don't want to sound like I'm blaming the victim here. That's not my intent. I just don't think blaming the insurer or provider is fair either. I dump the blame on the data broker/ad network and to a far lesser extent the advertiser.