Nobody cares if you heard about it before. You could say the same about bitcoin: you never heard of it until the first time you heard of it.
How so? I think that counts as a user review which contributes to the site's reputation. If a lot of ppl say the same thing, that would hint how unknown the site is.
You obviously never developed a coin nor tried to get a coin on an exchange.
Lol. Don't play that card. This is just a simple thought processing, no technicalities required.
Ppl are more likely to be scammed and/or experience problems in an exchange which has barely any reviews, lacks basic transparency and is even embracing shitcoins with open arms, hence listing it on that kind of platform proves that the devs don't care about the coin and its users.