joining airdrops will give you opportunity to hit jackpot.  those big altcoins now also had airdrops during their project launch.  it's good to join as many airdrops as you can.  because there are too many airdrops/bounties and you may not have much time, i would suggest researching and choose several good airdrop program.  this way you can have higher chance to hit jackpot when one of the airdrop program you join will be very valuable.  there are some members who bought house and cars courtesy of airdrops alone.