Signature campaigns are the best way to earn some Bitcoin. Especially if you are Jr. Member or Full Member which has a high payout rate. Don't lose time with faucets. They give you very low BTC 

This would be the best way to earn Bitcoins: Get a job and take out 10% of your earnings and spent them on Bitcoin. It always works for me 

I think the most profitable way to earn Bitcoins is to make yourself a casino/gambling site and watch the bits roll in to your wallet 

Maybe the best way to earn Bitcoins is to play games. I've seen that you could play games such as Minecraft, among many others and earn some Bitcoins. Is it really worth to spend time playing these games to earn some coins? 

The best way to earn Bitcoins is to build your own mining rig and set up 6 graphics cards on it to mine alt coins. You would reach ROI in no time 

Signature campaign has always been the most rewarding way to earn a decent amount of Bitcoins. The only you would need to do is to invest your time to make quality posts and you'll be earning good profits. Trading is also a great way to earn Bitcoins, but you need to have experience in doing such task. 

This might not be the best way to earn Bitcoins, but it sure is fun. That includes playing games Minecraft, Bitcoin Hopper and Bitcoin Flapper. They're hours of fun and at the same time you're earning a couple of satoshis in your spare time 

I would just make a casino/gambling site and earn Bitcoins. It could probably be the best way to earn them since the house always wins.