I admin part-time for a blogger who is technically unskilled. I don't want her near the back end, but I need her to have editing and basic admin functions on her own posts- edit, delete, and so forth. Some of the submitting methods I've had her using caused more problems than they solved.
This plugin is solving my problem. It's not perfect; setup is a little more involved than it probably needed to be. But I'm happy, and I think I'll be using it for a while.
I haven't used some of the more advanced features, nor will I need to.