I asked about it in the forum because the category just disappeared while I was away over Easter. The reply has a link to Mater's site in which she has reposted her disapproval of fanfics, dated last year.

Apparently, there will be an announcement made on the site but it seems as though they've done it in a hurry. I've been in contact with one of the authors affected and she didn't know it had happened.

Very sad.