I have a dozen wordpress blogs. Some of them get 10 times the traffic as this site, yet this site get’s 10 times the spam attempts. I regularly have to delete up to 50 trapped spam messages. My own anti spam plugin rejects about 50 attempts a day and the other spam plugins are stopping another 50 a day.
I suspect that the spammers are following the links from the WordPress.org plugin repository. If you are a spammer, take a minute in you silly attempts at the English language to tell me why you want to spam me.