Yes Deas, I have blocked the user (not a paid up ACMOC member), and deleted the post.
Unfortunately given we wish to encourage people to register to use the website, hopefully as a prelude to becoming a member, it is impossible to stop such things. I check the site most if not every day and when I find such things, delete the post and block the user. Of course that does not stop them registering again with a different username / email address, which is what has happened here (I deleted their first post).
Fortunately it is a pretty rare event.