@CoinMarketCap is a very popular platform for the conduction of airdrops.
A lot of people visit @CoinMarketCap and they will know about airdrop and will participate in it.
I think that @CoinMarketCap is the most famous site for crypto investors.
Many people use @CoinMarketCap to check the price and listings of the cryptocurrencies.
Now many people come to @CoinMarketCap to check for new airdrops and participate in them.
Airdrop is a good way to attract attention of the coin.
But a lot of depends from the platform where airdrop is conducted and from the budjet of the airdrop.