we are actually laying the foundation for that kind of thing on the new site. anyone will be able to write articles on their sandbox, but if they have never contributed before then their work will go through a review process, and may be rejected for not meeting our quality standards.
until a person has had at least one article accepted and posted to the site, they will not be able to post articles to the site at will. this will keep down the number of crap entries, as you have to prove that you CAN write a good article before you'd get the chance to write something bad….
and then of course, people who wrote troll stuff after being accepted as a contributor could have their contributor status revoked, or possibly be banned depending on the severity of the offense.
with all that in place, if we later find that we need to tighten down even further, we will be able to pretty easily. it will be a bit trickier to deal with the flood of people commenting on things though, as anyone will be able to leave comments.
*edit* oh, and we are already in the process of adding more staff too, yes. so there's that.