Facebook’s Embedded Player Is Broken, Here’s What They Can Fix to Fix It

Probably one of the most important things overlooked with the embed is responsiveness. Most embeds have width=100% to fit in the outside container, but FB does not do this. Hopefully they'll adopt it.

I find it amusing that Embedly says FB's embedding is "broken" when their platform doesn't tell you which site is embedding your video... talk about fixing.