Whether internal or external communications, both need to be aligned to get the full force of your advocacy program to work efficiently.

A point well made below.  If your company makes a big announcement and your employees are last to know, you're missing out on a huge opportunity to harness the advocacy power of your most authentic community of all...employees.

In a world where 80% of the workforce is deskless, it's important to reach all employees.  Not just those that sit at their desk and pass the noticeboard from time to time.  

Mobile is the way forward.  Employee advocacy programs need mobile first training available.  Teach your employees to be social on the go and embed it into the daily lives.  You'll find better results when employees are sharing via mobile.