To me it's a political action committee using its membership numbers to cite as a base of support for the positions it advocates. Net, not for me.
Yes, I got it for a few years until I realized that it was a lobbying group with cheap subscriptions to increase their numbers. They don't ask our opinions and don't represent my positions often times. If you have children/grandchildren you'd want to think a bit about the lobbying they do and who it hurts.
By the way, you can be sure this is their primary goal...lobbying...when you try to get out of the group. I had to try for months and send several letters before I got dropped from their numbers.