Airdrop and bounty are in turmoil in the general trend of the market. Airdrop is not worth much at this point. So, I like to engage in bounty including twitter or signature. The market will determine the success of the project. Just be patient enough to wait for the market to pass the test.
Yes that's true, Bounty is really a good source of income compare to airdrop and the signature campaign is on of my favorite campaign to participate because the bounty rewards allocation is quite big compare to other campaigns.