Actually if you are going full time in collecting bitcoin, you should always aim for those freelance jobs and your last choice should be signature campaigns and faucets...Cause if you focus too much on signature campaign you will not wake up to the truth that you could earn more outside the forum and in real life, but since we are talking about things that we could do in here to earn, I think those job offerings in the services section are the ones we could rely on without a signature campaign...