paid community

I'm the community manager of Copyblogger Academy, which is a paid online community product of Copyblogger, a blog about copywrite. I'm here to tell you that a paid community product works well for blogs. Have any of you attempted one? If so, how did it go?

Have any of you ever entertained the idea of creating a paid community with your blog? This often means adding functionality to your blog to allow for a paid community. You could offer discussions, courses, premium content, and more. I'm curious what you would offer?

I'm in the process of creating a paid online community. It doesn't use these traditional forums. My question to you is would you pay for membership on a community? Why or why not?