Since the amount of spam has increased heavily over the past weeks, I've
decided to finally strengthen the counter measures and implemented a new
Bayes spam filter. While this should be much more effective than the
manual black lists that have been in use before, it also poses a risk of
falsely classifying a message as spam.

So if you ever write a message and it doesn't appear, just wait a little
bit. I'll go through the messages from time to time to check for wrong
classifications. At some point I'd like to improve this situation with
explicit messages ("Your message is awaiting moderation"), CAPTCHAs or
similar, but hopefully false-positives will be rare enough that this
doesn't have to be a top priority right now.