this is a worry: i'm technical enough to have set up an Apache server as a kid, but not technical enough nowadays to know how Relay's filter illegal content.
if i were a theoretical 17-year old hobbyist and set up a Relay that were infected with illegal content (may even purposely put there by ill-intending parties), I assume i would have responsibility and possibly be charged with possession & distribution of illegal content which is 5 - 12 years in a federal prison minimum by the time my 18th birthday rolls around.
sorry to be so dark, but it's a worry.