Given my political and religious views, as well as my work interests, I get all kinds of opportunities to join all kinds of organizations--and of course pay $20 annually for the privilege (or more), and of course to allow them to use me as a springboard for various actions more or less on my behalf.
Apart from my church, however, you won't find too many actual memberships. And why? Well, at one level, I'm not a joiner. At another, my resources are finite. And at a final level, well; there just aren't that many organizations with which I agree.
For example, I was almost ready to join a well known conservative/libertarian organization when I noticed something; the founder claimed that it didn't matter what specific theology one held as long as one was pledged to oppose Godlessness and a conspiracy.
At first glance, that sounds great--let's prevent a holocaust that would make Hitler and Stalin proud, right? But think about it; the Scriptures (Daniel and Revelation) seem to indicate that someone's conspiracy will eventually succeed. Our hope for avoiding it lies not in political action, but the Gospel. To fight this conspiracy actually means to consign more people to its atrocities because it means you're taking resources you could use to preach Christ and diverting them to stop the Bilderbergers.
Be careful what you join.
I Heard It On The NARN - More about Madison Rising.
11 hours ago