I heard Sarah's presentation about Facebook at the Romance Writers of Australia conference last year. This is a depressing but realistic update.
I tend to use social media to keep up with happenings in worlds I'm interested in. With FB hiding that stuff unless I tick notifications for particular pages (which then overwhelm my newsfeed), it doesn't perform that function.
I like the people who hang out on FB, but I sure don't like the platform.
By the by, does anyone know of any good Google Plus circles that are about romance books or writing? (and that would let me join)