A relatively good way may be signature campaign, for people who are starting their new journey into btc world, because it can helps them a lot to earn btc without complications. I also suggest to sell service to other members like offering your programming skills or web designing and get paid on bitcoins.
I hope to have a programming skills but unfortunate I am just an accountant, I think my skills are not in demand in here but I could say I am quite good in ready numbers so trading is my game, that's how I grow my money.