It would appear that the current system of user activation no longer does the trick, as there have been massive amounts of spambots posting all sorts of stuff all over these forums... As an emergency measure, I have temporarily set each user registration to be manually activated.
I have also changed the registration code to the following:
For everyone trying to register, sorry for the inconvenience.4F1AF09B
Edit: If you notice any spam that I seem to have missed, please let me know!