I'm just asking this because I find it a bit odd. I had close to 300 messages coming in and most was only responding to themselves, not on topic and some had just got a new gadget and wanted to test it.
I installed SpamFreeWorldPress. Now it's so quite. I tested the form in another browser, one of those forms you just fill in the password above. If you can't do that you're a machine. It worked fine, I had my own message for moderation.
Now I turned of this plugin and instantly I have like 23 messages. When I turn it on again it stops. Instantly.
So this means all those on topic messages from people is only spam from a machine. I'm disappointed as you may understand. I thought I was talking to people.
... or should I get another spamfilter?