http://www.engadget.com/2015/01/21/healthcare-gov-sharing-personal-info-with-advertisers/

"....A report by the AP has revealed that Healthcare.gov, the Government's affordable care portal, shares some of your personal data with a whole raft of marketing agencies. The action has been independently verified by the Electronic Frontier Foundation, which has found that a person's location, annual income and smoking habits are all being freely distributed.

The foundation has also discovered that enabling Do Not Track doesn't protect users against the surveillance, .... "

http://www.ar15.com/forums/t_1_5/1709799_Obamacare_personal_data_is_now_being_shared_with_private_companies_for_marketing_purposes.html