Limiting the # of shares in some way would be nice also. If people could only share one thing per day, they'd be more thoughtful of what to spend it on.

I actually had a moment just yesterday, imagining/hoping my toddler daughter will grow up and refer to my phone in the same way I did with my parents cigarettes when I was a kid. My mom always claims she had no idea they were dangerous when she started as a teen. I wonder if we'll all sound the same with social media and our devices to our kids.