I ignore a lot of stuff on FB. I refuse a lot of friend requests and send a PM saying "see ya in the pages" but no thanks. What I do not ignore is the stuff that matters to me. FB connects people. FB educates people. I educate people about fracking by directing them to my FB group Frack. There are only about 130 members and there are only about 6 members that regularly contribute (daily) but there are many readers. The regulars glean info and post. In just a few months, these regulars have gleaned over a hundred links to prove a point.
Facebook works if you ignore the crap and the trolls. Sound familiar?