It is done by legendary Hua_hui. So far I have earned from 1 of his project with $100 already. I like his project. This is the latest one.

AIDOC Telegram Airdrop | Limited Time

- Join and stay in the AIDOC Telegram : https://t.me/AidocMeEn
- Private message @AIDOC_bot and type /start
- Earn extra AIDOC tokens by inviting friends to telegram for each invite, capped at 10 invites. (auto tracking)

ANN : https://bitcointalk.org/index.php?topic=2620454.0