Well you can also use My Wish project, if somebody pays them for their services by your link they pays you back about 1 ETH. Just have a look through that article and guess is it suits you or not, 10 min business 
How to use that? What is My Wish project? Well, if that would be easy to do, I will, 1 ETH is a big money for me. But if that services will waste my time to do, I will not accept that project. I'm just stick to signature campaign to earn more than 1 ETH that you have said.