Talking about making sense of Big Social stats has become an industry in itself. First there’s the issue of pulling relevant analytics from social channels that don’t integrate. Then there’s the multiple products that do pull things together–but never in exactly the way that seems to matter: ROI and ROE (Return on Engagement). This story was originally on the Buffer blog and is worth the click. Here are some protein-packed chunks: Not only does Facebook have millions of users who…