About a week ago Cryptodouble (Cryptobubble) BTC and DOGE wallets contained about 45 BTC and 38M DOGE alone, but I believe that the scam was for 100s of BTC. It was obvious pyramide and some people with small "investments" actually doubled their coins, but they have received them from new "investors".
Are people just plain dumb or is it greed/gambling? I was always sure it is the latter, but I am not so sure anymore. This is a serious question.