Number 2 is very helpful. Sweep Bitcointalk Forum.
Somehow they are like being cooked by questions that are asked here which sometimes are really deep and the one who will answer it will need to be completely informed of what is happening within the ICO or their project.
There you could already see how much effort this guys are making and being truthful about their project.

Number 3 is basic but mostly forgotten. Why? They are being dragged by the hype of people or just a fake hype. This could lead to a big loss.