It shouldn’t surprise anyone that Facebook is still discovering and fixing issues with its metrics algorithm.  When the majority of your revenue is comprised of selling advertising, it’s key that your customers trust the product in which they’re investing.  We all understand that Facebook has worked hard to monetize a difficult product, especially as we move towards a true mobile first world.  As Marketers mull over options for social spend, Facebook will need to reassure the market that their platform is effective in reach, engagement and especially conversion.  And they’ll need to work even harder to regain trust.