Sorry, that was old spam before the new forums were implemented (on Jun 2).
Before, I usually had to guess at the name and when I approved, hope it wasn't spam. Sometimes it worked (CAKECAKE in the Games forum) and sometimes not.
Since the new forums have come up, I don't think *anyone* new has registered to join, because there hasn't been any spam (that I know of) and Ed had taken off the admin approval of new users.