When it comes to the question of investing crypto into this or that ICO one has to review website, White paper, chat with the team members and advisory board, watch official groups in Telegram, Slack, study smart-contract and Bitcointalk thread.
But this is a huge work for one person, taking into account the amount of ICO that is being held lately.

Except for your own study of the upcoming ICO, which sources of ICO reviews and ratings do you trust and why?