1- Verify the credibility of the project by checking its website, social media channels like twitter, discord and telegram and feedback of community.
2- Check the team behind the project and their proficiency and experience.
3- Road map of the project, utility of their tokens and listing plans. No investment should be required from airdrop participants.
4- Supply of their tokens and how realistic are their airdrop distribution plans.
By following these steps, hopefully, we can reduce the risk of falling for scam airdrops.
I totally agree with you.
It's also worth noting about the potential collabs and investment institutions and entities flowing their money into it.
If they are credible - it's more likely the project won't be a Ponzi scheme.
Thanks for your comments. You are right money flow into the project is an important factor as it gives confidence to airdrop participants that management of the project has sufficient funds to distribute fair reward to the participants. I personally earned significant amount of airdrop rewards specially in L2 of Ethereum such as Arbitrum and Optimism, as both projects were backed by professional teams and projects were heavily funded bu big investors.