Here are some notable red flags in Airdrop meta lately

1. Postponed launch date or TGE
2. constant extension of campaign 
3. No transparency
4. Diluted 
5. Lack of communication to the community from the Team
6. Most projects that have dubbed the name *PROTOCOL* have not lived upto their expectations 
7. Claim after mainnet (team dumps often before community)
8. Security breach of the project social handle(s) or website 
9. Partnership with notable rug VCs or KOLs
10. Asking for constant payments from the community