I would say close it to the public, keep whatever members we have here, and charge a monthly fee.
One thing I've learned all these while about online information is that, you've got to pay for it to realize the importance of it. If members were to be charged a monthly fee, or have worked hard to earn it (eg, Executive VIP / Jr. VIP), they will most likely treasure this blackhat method or that blackhat tip; and thus they will not so freely give it away in another forum.
Adding on to that, I think any blackhat stuff shouldn't be exposed to the public eye at all. I mean, we're all talking about going under the radar for 80% of our methods, and if we are so easily exposing our methods to anyone who knows how to google it, we are shooting ourselves in the foot. This may be one of the main reasons why some methods don't work anymore, and organizations are catching up - which we don't want them to.