I spoke to one of them for months
I once spoke/emailed with on of those guys for months, it was fun he called my cell a couple of times and it was fun telling him I had trouble going to amsterdam to get the gold out of the bank next week so I would go in 15 days, and told him not to worry, I would take the 15K USD we needed to pay for the storage of the treasure, it was fun to see how desperate they can get.