All free methods of obtaining Bitcoins are frauds. Due to the nature of Bitcoin transactions, it is very easy to scam. No one in their right mind will ever give out free Bitcoins. Yes there are hundreds of Bitcoin faucets out there that do PAY real Bitcoins. However, most of these require you to do smalls tasks in return for some Bitcoins. If you do the math you'll be earning less than the hourly wage in North Korea.
If you really value your time you should either buy them or I suggest invest in a small ASIC device and mine a little.