It seems that this blog has become a target for spam. I thought the sarcastic comments quite a nice touch too.
"Thank you for this blog. That's all I can say. You most definitely have
made this blog into something thats eye opening and important. You
clearly know so much about the subject, you've covered so many bases.
Great stuff from this part of the internet. Again, thank you for this
blog."
So I will be switching the moderation for posts feature on, and apologise for this.