I thought this thread was "deja vu all over again," but I couldn't find the previous discussion until just now. You'll see other threads on the subject in the crosslinks at the top of this thread. We came up with the PG13 tags in the Bawdy song thread. We were not able to get a permanent, cookie-enabled PG13 block, but we did work up a filter that will do the trick. If you are on a computer that blocks you from Mudcat because of profanity, Google Mudcat FAQ and go to the FAQ page. I added this to the first message of the FAQ in 2005.
The Filter
(searching by thread title)
Toward the top of the Mudcat Forum main menu (click here), you'll see a "filter" box - put an appropriate word in the box and set the age to whatever is appropriate to cover the period you want to search. Click the grey "reset" button, and all threads with that word in the title should appear (a "thread" is a series of forum messages, posted on a specific topic). Here's a filter box you can try:
Or as a link you can bookmark:
http://www.mudcat.org/threads.cfm?Title=pg13&Age=1&submit=Refresh&FilterOut=1