Airdrops are free money so it is profitable indeed.. you just have to do certain task then your good! easy money! But now there are a lot of fraud out there, so just be vigilant in choosing the right coin to take part.

For your reference here are some legit airdrops ongoing.
1. 100 VICTRA == https://t.me/victrabot?start=321464543
2. 20 LEGITCOIN == https://legt.me/151610
3. 68 IOST == https://t.iost.io/?c=TZnTtbvD