The MHVBoard is an Arduino clone based on the Metaboard. It has a USB connection, but it doesn’t use an FT232R chip or a USB AVR. It uses the V-USB library to bitbang low-speed USB directly from the microcontroller.
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Bit-banging USB is a waste of AVR processing power, especially when hardware USB support in the AVR is available for as little as $2.23 and it leaves the AVR for your own programming tasks.
Bit-banging is a great exercise as a proof-of-concept and to show off skills for the original developer, but I really hope that newbies into the AVR world do not end up starting out with this kind of board, because it just doesn’t make sense to overload the processor like that when hardware support is available on the cheap.