Flutterby™! : Medical Privacy

How a company you've never heard of sends you letters about your medical conditions:

When asked about its partnership with Acurian, Walgreens spokesperson Scott Goldberg pointed me to a Walgreens FAQ page about clinical trials. It states that Walgreens doesn’t share health information with third parties without permission, but that a third party may “receive your information if you contact the web-site and/or toll-free number in the letter to seek more information about the clinical trial.”</blockquote<

And those "clinical trial" web sites will grab anything you type in, and use all of the standard ad network tricks and tools to establish your identity, including sending back any data you've entered before you've clicked on any terms and conditions documents.