question about emulation section

You know how you have the bios files posted on the sega emulation section? How do you get away with this with your hosts? These files are not legal to distribute like you do...would suck to see this site get shut down because you are hosting illegal rom files :/
Havn't those been there for some time? Im sure even the almighty Sega knows about it. As they did when the site had direct downloads. Im sure nothing will happen.