I am really interested in letting my WP users send private mail to each other. I've noticed I'm not the only one. I realize there are a few plugins that add add this, but I hate to go the plugin route on something this big, that will make lots of database changes/additions.
So, I'm wondering if anyone knows if this is on the horizon for a future release of WordPress. Everything is so social now, frankl I'm surprised it's not in WP yet.