It has been explained (and I agree with this) that SEI has no obligation to enforce NDAs. However, enforcing NDAs may enable some of our community projects. For example, Gaming would like to have its users take part in closed betas. Most of those are protected by NDAs, but it would be nice if we could have content on the game online the moment the NDA is no longer effective.
The idea would be "private tags", an employee-only option where a tag and its contents are only visible to whitelisted users (those who are under the NDA). They can ask, answer and collaboratively edit their content normally; when the release day comes, a swtich is flipped and the questions become visible and googleable immediately.