Always look beneath the surface...

Conduct a mini internal communications audit before addressing an internal  communications gap -  Some video tips on how to do this are here:  http://www.snapcomms.com/tactics-tuesday/internal-communication-audit.aspx

Mutual trust is critical to effective internal communications

Never, Ever, lie to me (or use 'spin') - my trust will be gone forever.

Use simple language if you want me to understand

Use plain language to help me understand

User Adoption Communication - start simple!

Especially if I am new or a digital immigrant.

10 Reasons NOT to block social networks at work

http://www.techrepublic.com/blog/10things/10-reasons-not-to-block-social-networking-at-work/3140

see more

How to get me to use social media

Use other channels to promote interesting discussion threads within internal Social Media channels.

Reinforce important policy information regularly

Do employees understand policies regarding data security and  the misuse of confidential information? Or are you leaving it to chance?