Have you seen any health exchange scams?

Minnesota's new health insurance exchange, MNsure, launched more than a month ago. Consumer watchdog groups are on the lookout for scam artists trying to take advantage of confusion surrounding MNsure and the Affordable Care Act (Obamacare)

Have you or someone you know received any phone calls or mailings you thought might be a health insurance scam? Or have you run across a questionable web site that claimed to be a healthcare exchange site but wasn't? Please share your experiences here.