What's the difference between an airdrop and bounty program?
For an airdrop you have to do an activity only once. After some period of time (mainly after main sale) you will get your free tokens. Rewards are lower, due to lower effort.
For a bounty program you are asked to do regular activities and you often have report all tasks which you have done to the project team in order to receive your tokens.
Bounty programs are worth more than airdrops, but the effort is not comparable.Please always keep in consideration, that some projects can fail. If that's the case you wont receive any tokens for the effort you've done.