I test the airdrops that I post (that give the coins that offer and we can have a record in any place of that), depends of the project, it distribute this coins in specific date to our erc20 compatible wallet or other are available to exchange in the same project platform, I never post airdrops which pages has malicious scrpts or airdrops where you need to install an app of your phone or download an application to your pc (this and the previous ones are too risky), but I cant guarantee if that tokens will worth something in the future or if the projects will send that tokens to our wallets in the according date (as I said in the note I am not involved in any way with any of these projects) is each one decision participate or not ... Thanks for comment my best wishes for you!