Like all the rest here Bitcointalk is the best platform to get feedback if the project you're looking for its status is a Cryptocurrency related project if it has negative feedback and he scammed one of the members here, or if one who is very much aware of the Bitcointalk section about scams, what good about Bitcointalk because people here will ask for screenshots and complainants have a format to follow.

Another one is Google and Youtube, there are review sites and bloggers/vloggers who will test products and services for content on their sites and Youtube they call it unboxing just check the profile of the bloggers/vloggers if they are accepting paid reviews because they are not reliable reviewers if they are accepting paid reviews they should be independent reviewers.