To be honest, on airdrops now its almost not to make money, not as last year when there was an increase in the entire cryptocurrency market. Airdrop is when the developer gives not a large number of coins or tokens for simple actions in social networks. Thus, he is gaining a cohesive community and popularizes his project for investors. Well, it's better to do bounty than airdrop, as there they will give more for human labor.
I totally agree with you. Bounties are far more efficient (but it needs precautions with Twitter + Facebook). Keep in mind that you will need to take time to find valuable bounties, ones that ICO has good chances to success (and i would suggest to follow max 3 bounties at the same time). So you will need some background to chose which you will participate in. There are also bounties that offer an airdrop, it's good to combine both
By the way we are still on bear market so it's a bad time for ICO's. Airdrops aren't useless, but don't think you will get rich with those
They are some exceptions like HYDRO (hydrogen), ONT who led to a serious payout!I really missed out of the ONT airdrop, learnt they canceled their ICO and went airdrop instead, but I was lucky to have taken part in hydro, such projects and airdrops usually come in rarely, Bounties are better just that they require daily task that take long to complete unlike airdrop that is just a one time off