It may be hard to believe, but today marks the five-month mark since Obamacare's state and federally run health exchange marketplaces went live... Here are the 10 Obamacare facts that really matter after the first five months. 1. Obamacare enrollment has crossed the 4 million person mark.. 2. Too few young people are still signing up. 3. Obamacare is failing to court another crucial group. 4. Most insurers are losing money from Obamacare -- and that's OK. 5. Silver and bronze plans were even more popular last month. 6. Gulf Coast enrollment is soaring while Nevada and Hawaii are lagging...