It's been more than 24 hours since the centerpiece of the new Affordable Care Act — a new online health care marketplace — opened to the public. 

It hasn't exactly been smooth sailing. 

At last count, some 4.7 million people have visited the site and more than 190,000 calls to the site's 24/7 hotline were logged. But how many actually succeeded in signing up? Obama's camp won't say, but clearly many haven't.