I've had a look at a few different airdrops in the last couple of months; most of them require quite the number of hoops to go through (join Telegram group, repost this on social media, share with at least a friend, etc. etc.) in exchange of a risible amount of tokens/coins. Sure, go ahead and waste 15 minutes doing that stuff, but you're not going to end up with more than a couple cents worth of token. Was it worth it?