Yea, but for a lot of people who are just starting to get better at practicing mindfulness, it's not a 100% solution yet and you end up doing things like FB anyway, just more rarely. (I know that was the case for me at least)

I actually hadn't heard the term mindfulness. I think meditation is something I'll need to give a serious try with that in mind. I can see the possible benefits.

You're right on the latter part. But as of late I've gone to the extreme and deactivated all but Snapchat for social media. As well as using Cold Turkey and editing my hosts file's to keep me away from certain sites.