i've found this jira argument pretty interesting.
yes, now Linden Lab is going to filter Adult contents, as everybody knows about it already.
BUT....what they are arguing there is the necessities of filtering "PG" contents !!
wow! how interesting!
"if we can filter out Adult and Mature we should be able to filter out PG as well."
and there you can read many reasons why it's necessary to do so.....