We have our own proprietary methods, for sure, but like the dynamic nature of the Facebook and Instagram platforms themselves, through rigorous testing, those methods are fluid and are being constantly updated to stay in tune with those changes.
Facebook is a fickle beast that changes things up frequently. We treat it as it deserves to be treated. (Rather like a sailor treats the ocean: with love, admiration, huge respect and just enough fear to keep us on our toes.)
What worked for you on either platform just three months ago may not work today… and besides…