To earn that amount per day, the only method I know is to do a physical job 
Or you can invest a lot on bitcoin mining (with very reasonable maintenance fees), however the cost is over 40 BTC to make you 0.1 BTC per day.
Also, joining a signature campaign earns you fraction of that. In the bit-x campaign you were able to earn that amount per day if you make 100 post per day (which is almost impossible, or if you spam, you'll got banned). However they are setting a maximum amount now.
Or you can invest a lot on bitcoin mining (with very reasonable maintenance fees), however the cost is over 40 BTC to make you 0.1 BTC per day.Also, joining a signature campaign earns you fraction of that. In the bit-x campaign you were able to earn that amount per day if you make 100 post per day (which is almost impossible, or if you spam, you'll got banned). However they are setting a maximum amount now.
I can invest in mining equipment, I have access to free electricity
for me i am investing in dadice.com