For me at least. It's only been public for a week or so, but the NZ coffee review website has already been found by a Chinese spammer.
Some quick hacking later, reviews from new users are now not visible in the RSS feeds or on any of the pages in the site until I manually mark them as 'OK'. Spammers get marked as 'banned' or 'deleted', depending whether I want to keep an eye on them or whether I just want them gone.
Let's see how this works.