Initially you had to register to be able to post comments. Then I added an Anti-Spam plugIn called "Akismet". First it worked really well but now it doesn't stop marking real comments as spam.
From time to time I check those but it might happen that the one or other slips through and gets deleted. In case you posted a comment and it does not appear after 1,5 days, please let me know.
Moreover if you have some tips for me about Akismet or any other effective spam filter plugIn for wordpress – then please let me know.