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there are so many airdrops available from various ongoing projects. and you can look at the bounties thread because there are many bounty campaign projects that provide airdrops for you to participate in. and another way you can join social media groups such as facebook and telegram, because there are many airdrops that are shared by group members.
The information you have provided is very true, and I am one of those people who like to hunt for Airdrops and Bounties. Although not all the Airdrops and Bounties that I participated in were legit, but I enjoyed doing this.
There is an opportunity for me to earn money for free, although the chance is small compared to three years ago.