Airdrops and bounties are passive these days.
Well I still prefer the bitcoin paying campaign because we have an assurance to get paid weekly compared to bounties and airdrops due to scam projects.
And that's why I've said they're passive these days.
A lot of them becomes a scam and won't pay the participants. There's no guarantee unless you work with a reliable bounty manager and makes sure that the payment for your participation will get paid.