Another important reason why we need this feature:
For membership-based organizations or e-businesses, the registered members' info, especially email address, is the most valuable resource/asset of the company. You don't want to share the contact list of your customers with the public, which should be easily understandable in the business world. Just like WA won't share your customers (us)' email list with your competitors.
This feature is critical for most organizations/ businesses even thought they might not be able to realize it at this point. We hope WA can put it in a much higher priority and develop it in the near future.
Thanks a lot.