What is an promising airdrop that i can still sign up for in this moment?
if you are looking for coins that can have a better future in long term and have a higher price then you need to check out their project, the white paper, check out the team and how active they are in contributing to the project and bug fixing and releasing the new code, ...
then also check out the volume and current price of that coin in long term not just a couple of days.
with these you can have a better picture.
i am only interested in Byteball among all these airdrops. it seems like a very promising coin in long term.