Right now the most attractive one is DeepOnion. It is just unbelievable. Every week, (for legendary ranked members) they are giving away as much as $1,000 worth of coins. If you participate in all the 40 rounds, it means that you earn $40,000 without any work at all. And that particular currency is having a very high potential for price increase.
I signed there and didnt receive anything. Also used their wallet but it wont connect to their network.
Deeponion is a great project and i am part of that concept and getting my weekly bounty. You have to join their community site
https://deeponion.org/ and apply here
https://deeponion.org/community/apply.php. They check your account and if found ok, you accepted to their airdrop. They have strong community and you get reply of your any query posted in their bcd thread.
Don't hold your breath waiting on getting authorized..
Approximately 82% get rejected
They reply on forum if they like your question.. if they don't they delete it.
great concept with a great future. But no transarency, and no airdrop if you don't constantly say how wonderful DeepOnion is in all of your posts.