I hope that you are speaking about signature campaign earnings but it will never works always bro. Even campaign managers will check you do posts only for payment means they would not accept as the participant again. We need to set alternate earning by learning the tactics in bitcoin related businesses.

There are a lot of ways on how you can earn Bitcoins. You might not need to invest your hard earned money but you will definitely have to invest your TIME and patience. There are those who do bitcoin mining. Some relies on advertisements viewing and captchas but it is time consuming and the earning is super low. As far as I know, signature campaigns offer a lot of profit than any of those I've mentioned. Once you're earning from the campaign I suggest that you put a little portion of it in investing. But be wise enough to know when to put in your money and when to withdraw especially now that the value of btc is a little unpredictable. Good luck!

There are many ways to earn bitcoin without doing any investment but you need to do hard work for that. Like here in Bitcoin Talk Forum you can join bounty campaigns and you need to work for that and you can get reward in return. There are some faucets where you can enter your bitcoin address after every few hours and they sends you few satoshi for free and same there are some other sites also which give you free coins but you need to work for that they are very low but something is better than nothing.