I've tried to argue this point before with someone, and got amusing responses...
my thoughts are, if you can do it openly on any streetcorner in the civilized parts of the US (bible belt & taliban country excluded) then it's "OK" to do...
if not...then, uhmmm prolly not a great idea
anonymity online will not protect someone forever, those doors are slowly closing... :/
what made the internet great and wild is disappearing....soon it will be a NON-anonymous, BIG network & gov-only controlled and operated playground...
PS: don't get me wrong I LOVES ME SOME free porn....I've been a fan of alt.binaries.pictures.erotica.bigtits for several years....kazaa, etc....but that was just a nice free ride I didn't expect to last forever ;)