In the torrc there is 'uncomment this to mirror directory information for others, please do if you have enough bandwith'
I basically would have some bandwith free but my router is out of RAM. But this isn't the question... Why is there an option DirPortFrontPage /etc/tor/tor-exit-notice.html?
Mirroring a Tor Directory doesn't not make you to an exit node, doesn't it? So what risks are if you mirror a Tor directory? Is it safe with the law to do it at home?