It was clear to me especially after seeing the IRS turn over members lists and personal information to MoveOn.org and other groups, that anything that anything you submit or do with Obamacare will be accessable by almost anyone in government, law enforcement, and the political Left including their voting groups.
After signing up on the website, I have no doubt that you will be blasted by mail spam and email spam most or all of which will be slanted to Obama and the Left. There will be a strong inference that not responding to these mailings and spam and not supporting Obama and the Left will negatively effect your level and quality of care.
As I said in another post, ACA is more about government obtaining deeply personal sensitive information on individual citizens than it is about 'health' or 'health care'.
I will never voluntarily jump into Obama's healthcare mess, but I think it will not matter. I strongly suspect that all doctors are going to be required by law to turn over all patient medical records regardless, including even if you pay cash. Doctors will become defacto government agents as part of their license.
And in terms of signing up, I am just counting the days until everyone is forced to enroll, list your hospital and doctor(s), no matter what your insurance situation is. As I said, it is not about health, it is all about information and control. They are starting slow and voluntary, but this will quickly change to threats and force. They want everyone in their database and under their control in terms of medical care, whether you need it or not.