i learn that signature campaign is good source of income, only if you are legendary or high ranked 
which is good for aiming though
which is good for aiming though Don't treat Signature campaign as a big source of income. You don't know what will happen to that campaign, some of them are already closed/paused. People who do this are those who don't have a job, i guess. They bought/make many alt accounts to apply on campaigns and sometimes start posting non-sense/shit quality posts.
This should be noted.
Just like the known campaigns like bitmixer, there was a statment not too long ago by the OP they are downsizing by alot.
Which is why they removed all full member accounts to participate. So imagine if you were a full member and got btc just from them, youre now out of luck.