But wait, what do we call scam?
1. An ICO collects money, unlocks tokens and do great returns then doesn't deliver anything. Abandon the project. (e.g. Atonomi)
2. ICO collects money, they exit scam.
3. An ICO collects money, cannot even unlock tokens and when they do, they dump prices (e.g. Sparkster!)
First one is kinda okay actually, we can still get tokens and sell them. But to be able to recognize one, look at their team whether they look genuine or not, as about their roadmap, also if it seems to good to be true (in terms of dream/return/tokenomics) it is probably scam.
good luck