Every day that goes by I am more convinced that the Twitter stream is the best way to communicate, as a brand and as a consumer. On Twitter, as in Facebook, I follow/like whatever brands I find interesting, engaging and resonate with my believes/interests. If I see that a brand does/say something I don't like, I simply unfollow/unlike. What Facebook is doing is (over)engineering how my relationship with brands/people…
Why do you want to engage with brands? I don't mean that to be antagonistic, I just don't have much understanding of that particular thing.
There are a ton of reasons to follow things that aren't friends. And Facebook was a great way to track all that stuff. Now, it isn't, because Facebook changed the algorithm. You can still find it if you manually click on the Pages Feed, which is handy for folks who know it's there. But most people don't, so most of what you take the time to post on Facebook as a business is barely seen by anyone.