Referrer spam

Long time ago, I've modified this blog a little bit after an idea by bertl to prevent spam posts by bots. It worked, and until last week no spam occured. But since a few days, some spammers are posting comments into this post. Strange.
And even more strange: My referrer list shows a lot of urls and domains which advertise for poker and xanax and teen sex and stuff. Which means people seem to come from these sites to But it's just referrer spam. A thing I didn't know of until now. You never stop learning.

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