Yes, let me tell you that today is a very great airdrop that is going on. And I will get what it is, but I hope that in the future it can prove to be a better profit  first zksync is most popular network and they will distribute a hige reward for it's users. Secondly, let me tell you that there is a mode network they have now points system also main net has available so I think in future they will give alot of benefit.
I think there is more airdrop available but it's seems to need investing high amounts.