ftp PASV risks?

[ericj @ breakers . East . Sun . COM (Eric Johnson)]

All,

Can someone tell me what security risks are associated with allowing PASSV ftp?
I've got a few ideas, but I'd like to hear from the experts.

Please send mail to me directly, as well as to the list.  (I didn't mail my check 
to SiCk PuPpY promptly, so my subscription has lapsed.)
  
Thanks in advance,

Eric