In the last 5 years, I am finding myself changing my philosophy on hiding content behind a member's only login on an association website. At first, I thought hide as much as you can to truly show value to a member. If you aren't a member, look at all this stuff you are missing!
But now, at a different association at a different time, I find that my thoughts have shifted. I am not to the point where I think everything should be open and free to everyone. However, I really think you have to take a serious look at what you are putting behind the curtain.
Is it really the members only web content that is leading folks to join and stay members? Because if it is, you have much bigger problems. (But you also have many big opportunities if folks are that tied to your content)
I am guessing like most associations, you want to engage your members, get them to participate more and take advantage of the benefits you offer...and by doing that, they find the value they need in being a member. Therefore, I am of the ilk that we should open up more of the web content to help drive that learning and engagement and capitalize on the value creation there.