We all have doubt like you rightly said. Just like you said,it took me time to make that decision to join this platform because I thought it another Ponzi site. What scared me more was that i was told i will be uploading my picture with a paper having an inscription (username & date) on a platform i wasn't sure was credible enough...smile.
The story is no more the same today as all my doubt was cleared. I wish you the very best in this contest.