That's absolutely right. In fact, we should think first always before we do anything. I've joined a lot of bounties and also airdrops, some of them are good and others are not. So next time, we should be more careful on ICOs that we are joining in. If you suspect or doubt certain ICOs you can ignore it and there are lot of ICOs that you can try to participate.
true but in my opinion the last few times there were only a few ico that looked good because there were many ico that were not convincing, and also I saw that there were also good projects, but they did not hold ico or other crowdfunding modes but held bounties such as WhalesHeaven, dFinance. but I prefer bounties that are already listed on exchange because it seems better.