http://www.xbiz.com/news_piece.php?id=23796
excerpt from article:
Obtained by the Telegraph through a Freedom of Information Act request,
correspondence between the BBFC and the Department for Culture, Media and Sport (DCMS) details a system wherein the most sexually explicit content available online would carry an R18 rating, a rating that normally applies only to products purchased in sex shops or screened in adult movie theaters.
while i think
ASACP's label of Restricted to Adult (RTA) would be a better labeling scheme....
I would put my vote in for "randy" as being the labelling tag

Fight the international label of mystery!