Actually, that's a little bit of a security hole that I've just fixed! Guests were able to start topics within the technical support area and were allowed to reply to stuff elsewhere. Guests can no longer post anywhere and for the last couple of months I manually approve every new member. I did not approve Andeson because his email address looked odd and his IP is from Bangladesh, which is more well known for its spamming bots than it is for collectors of British coins!