Just one to add to the tips already given and that is check out the telegram group. First if there is no telegram group, then it is a no go for sure. Second if there is a telegram group, check the size because often times that indicates how many people will spend on the ICO. There could be some bots present, but there is nothing you can do at that point.
That's a good point; I think telegram is definitely important, as well as the other social media platforms (Twitter and then LinkedIn for looking at the team). Thanks!