May be you can use Facebook Connect to take down the sign up barriers, and this way, you will also get promoted in your new user's newsfeed when they join / cre

May be you can use Facebook Connect to take down the sign up barriers, and this way, you will also get promoted in your new user's newsfeed when they join / create a group. But the value prop of what features I would need that Facebook Group doesn't have isn't prominent enough.