Facebook Subscriptions
Facebook for personal profiles.
What is a Facebook Subscription you may ask? By opening up Subscriptions on my personal Facebook profile, I enable anyone who chooses to subscribe to my profile to see any posts I share with "Public".
When I first started using Facebook, I wanted to be able to share information and post links to my articles, but only those in my social network would be able to see those links and updates. Facebook has controls to allow me to filter my posts, but they've never been very easy to use. Basically, when I post something on my Facebook profile, everyone in my Facebook social network can see it.
I didn't want to share everything in my life with random strangers, and I didn't want to have to accept every one of my readers into my social network, so I created a Facebook Page. The Facebook Page is my public persona on Facebook, but now with Facebook Subscriptions I don't really need the Facebook Page anymore.