I think with this week pronouncement by SEC on tokens being a security we will likely see more developers going for Airdrops instead of ICOs, because one thing I notice is that there is no way an ICO will not fall fouls of one of these rules and also exchanges will be more keen to add Airdrop tokens than ICO tokens
This is a solid point. I am going to grab some Airdrops before they get over used tho. I think the first few will do extremely well.