If you don't see something of interest, create a page and group and use the "Fields of Dream" principle, build it, and it'll give people something to come back.
Invite your friends, family, co-worker, build a church page here and invite your congregation.
Invite your classmates, maybe not your boss unless you are the boss. Ask your favorite author, band, and more to expand here as well.
Just like with FB, when you first sign up, you're not going to see much content. Why? Cuz you got no 'friends'! This is a platform. It is a place for you to build your network. With FB, it is now easy to plug right into a network because others have spent years building them already. There is no magic substitute for YOU inviting your friends, families, and contacts to join you here. We may be small, but at least we're free!