what they are are "matrix scams"... in theory, a matrix is VERY much like a pyramid.. you pay xx.xx amount of money and get added to the list, then once say, 20 people or so also pay xx.xx the person on the top gets theirs, and the next person moves up, after the next 20 people sign up, the 2nd person on the list gets their items, and the 3rd is moved to the top, obviously, most people NEVER get anything from these scams, even if you are on the top, many sites get shut down or simply 'vanish' and are never heard from again, and say even if you did, think about it.. 20 people must sign up to get 1 item, so just for everyone in the first 20 to get their items, FOUR HUNDRED people would have to have signed up, and even then, 380 people would be left empty handed...