Here's a picture from NationBuilder's facebook page that should work with our embedly integration:
Here is an example from instagram which does work:
3/02/2018 - my test site has been upgraded to SSL and I can confirm that the https is working with facebook embeds - it is still not working with imgur, unfortunately.
3/27/2017 Update: Facebook embed.ly posts should work when you remove the "s" from the http link (http:// vs https://)
We will let you know when there are updates to this!