This thread is the first I've heard of it. I had to look it up. The scammer convinces the mark to put money into fake investments and escalates until the mark

This thread is the first I've heard of it. I had to look it up. The scammer convinces the mark to put money into fake investments and escalates until the mark runs of of money or gets spooked, then disappears. It's often made more persuasive by engaging in a fake romance.