If you are earning at least 0.5 BTC per month, can you share with us your story?
How did you start?
What do you think is the key to be successful?
It might inspire others and it can also help to promote your business.
0.5
BTC per month or more can possibly achievable in joining the signature campaign. The second option is you can get that profit too by doing trade in the exchange sites if you are good in prediction, or reading in the chart diagram.
I think getting half bitcoin a month through signature campaigns is not something possible, under the current circumstances. There are different factors that make this unfeasible, one of them is the fact that earnings per post are not as high, another factor is that the maximum number of posts is limited by campaign managers.