The video wouldn't start. And, since I had hidden the controls like we all do on VSLs, there was really no obvious way to start it playing. After making sure the embed code was right I e-mailed tech support, who told me it's a feature of most smart phones these days. They disable auto-play on videos to save bandwidth and battery time.
Well that sucks! Especially since most people view Facebook on their phones these days. So is the VSL dead now? I'm curious to know how you guys are dealing with this, or if you've even thought about it for that matter.