Regarding who sends the amount first, let's discuss. Ofcourse, I will not send the full amount at first unless someone is a very trusted trader here.
Please check your PM for the list of sites.
I got your list. It looks like adult webcam sites. Maybe not all but at least some of them are so I will say that they are not malicious in that they are not peddling anything illegal. However, a lot of these sites do allow you to make purchases with a credit card for private shows or whatever. If you have someone's credit card, you can run up their bill pretty high. I would be very cautious to anyone who does this deal unless you care to address this point.