Nowadays, it is almost impossible to make a profit from bounty or airdrop. Many of them wait for months without being listed, and after being listed, they are traded 100 times under the ICO price.
bounty is still legit for me, but of course not all bounties are legit and profitable.
at this time I followed one of the bounties (signatures) called harmony and I was sure that I would get the advantage because harmony would hold an IEO at binance.