I khow about https://buzzin.com and telegram buzzin bot.

Good side: This site/bot have much real user and published only verified project (paying) .

Bad side: After joining a airdrop, participants need to pay fee to get there token and also participants not get all reward in onces . Participants get there reward by 2 step.

I Don't like pay reward for fee system. CZ sometimes the fee is higher than price of token.

I think buzzin need to Leave it for best quality marketing.