Unfortunately, due to recent annoyances as far as spam is concerned, it has become a necessity. Registration requirements will also be stricter. Consider the voting to be concluded "early", as even I have had enough of the spam problem.

Some anti-spam software has also been added to the website which will automatically put posts suspected of spam into the moderation queue for approval. Although I doubt that this will happen often, if it seems to be overkill please let me know.

Of course if this results in less activity on the website in the form of contributions to posts I will consider changing it back to allow Unregistered to post. However enough people seem to have voiced their objections for now.