The success of most ICO that usually reach their soft and hard cap can it be attributed to the advert here in this forum or most of the investors got to know about the project via other social media and probably conference whereby the team showcase their product to the public. If you are to put your answer in a percentage form, what will be your answer.
I think that vary often they get info through direct communication, but then they look at other things, like forum, listing, social networks and etc. this is my personal experience. A lot of them look at
www.icoguide.com rates, this is new platform and they trust it for the moment. This is personal experience.