Your right, this might be potentially the wrong results. Right now we populate the OG meta data link with a baseHref determined https://github.com/mozilla/butter/blob/master/server.js#L307 and setup https://github.com/mozilla/butter/blob/master/views/embed-shell.jade#L14

To me this seemed like the safest way to handle our default thumbnail. Is there a better alternative I'm missing?