Previously this site received lots of spam attempts, which were blocked at first by the spam filter. Currently even the spam filter needs to be adjusted in such a way that it can even block non-spam related posts. To give users the least amount of trouble, no anonymous comments are allowed anymore, only registered users may post comments.

However this blocking of spam isn't the only problem. Lots of automated spam bots try to post replies on posts where no access is granted. This leads to filled up access logs, as well as throttling by the sheer amount of bots that try to access the site at the same time. In order to reduce this issue for real users some actions were taken: the website is now cached (leading to less SQL queries), comments are enabled (they were gone due to throttling), search is disabled when the amount of users concurrently visiting is too high (due to throttling and reduced SQL queries).

I'm sorry for the inconvenience this may cause, please give feedback if you have any issues on this website. Thanks in advance!