Hmmm I am alwasy sceptical about somethign being free...it loses it's value if it is free
DeepOnion airdrop is not "free".
You are a representative of DeepOnion when you post and your tag serves as an advert.
The airdrop also encourages you to post here and elsewhere as a helpful member of the bitcoin community at large, and particularly for the DeepOnion community.
HOWEVER, IF YOU CONSIDER THE AIRDROP FREE:
Consider many many works of art that started out free, such as John Dies at the End, among many many others.
Giving away things "for free" actually gives them a value... and community.
Think about this... if it were not for this airdrop would you even know about DeepOnion?