Research is very important, It's a fact to always check if the team is real and genuine but sometimes one might get it wrong that is why one should always minimize risk,no matter how the project looks profitable,never invest all your fund,invest what you can risk to loose in worse case scenario.
New or old projects, good research is always need to us. Very funny to tell that we could take a little test after send a little money in website. Actually we all don't have enough money to do that.