Little Traffic, lot’s of Spam

It is insane.
This blog recieves very little traffic. Roughly 200 visitors, and it says no keyword in the comments, which should at least tell you that I don’t like spam and take care of this site, as comments are not FFA and moderated.
It’s funny, my other sites, that have more traffic and content, do not recieve this amount of comment spam. I really wonder why this is happening to good old svensworld. Is it that the topics are spam worthy? Or that the domain is very old and people want to get backlinks from it?
Anyways, to all the people who want to push their sites: Do what you have to do, I have no problem with deleting.
In other words, keep on wasting your time.