Straight from the NPO laws:
4.6: Disclosure or Availability of Information to the Public. Any NPO with significant activities or assets or with substantial public support should be required to publish or make available to the public a report of its general finances and operations; this report may be less detailed than the reports filed with the general supervisory organ, the taxing authority(ies), or any licensing organ and should permit anonymity for donors and recipients of benefits in addition to protecting confidential or proprietary information.
I am agreeing that it would be nice to know what our membership numbers are...but making names publicly known is not required. I personally could care less if my name is made public about being a member....I have even put it in the contact page for district 4 and put my contact info in the Newsletter.....but I am sure there may be some that just dont want their info put out there. And thats their prerogative.