Wow! This is good to know... im newbie here and i think i would be the same, too. Staying here most of the time than facebook.
For sharing purposes, I am an FB user since 2009 and yes i have a lots of fb friends- christians and not. I intendedly post inspirational and bible verses. And positive post. Meaning to negativity at all. Then there's 3 or more people sent me a private messages thanking me for posting positivity. As per them it affects their daily lives. It almost came to a point that they are waiting for my post.