I noticed this post, and it triggered me to check my weblog-database. And yes, there they were, about 50+ records pointing to online casino's, cheap loans etc. Appearantly, this time it's not comment spamming, for which I had a solution (capatcha).

Now it's trackback spamming. The records were all from yesterday and today, so it seems someone has just started the spamming engine. They're easily deleted with a simple SQL statement, but prevention is always better. I'll try to implement a suggested solution asap.

[update]

Brian Delahunty  has developed a new method of fighting trackback scam. This one will work for .Text and dasBlog and, so he says, any other ASP.NET based blogging engine. So far I've only scheduled a Sql Server job that will delete all unwanted urls. It automatically runs every 15 minutes to keep the blog clean. Of course, prevention is always better.