Whats most easy way ?
No easy way to make money. In the forum or in your life. If it is easy, everyone would be rich.
And its small money specially if we look how expensive is life 20 $ is very small daily
$20 is not a small money and not small if you are talking about daily income. In good signature campaigns, as with the Hero member rank (my rank), you can get the income at $50 or $60, for every week, not every day.
I have to put my efforts into my posts, it is not easy.