Price Floyd, who was the Defense Department's first head of social media, is moving on next week. 

A fixture on Twitter at @pricefloyd, Floyd softened the Pentagon's approach to P.R. by encouraging its employees to use social media more freely.

He's also known for soliciting followers' opinions and starting discussions on a broader scale than was previously standard for the Pentagon.

Tweets like "Interesting story yesterday in Long War Journal on Taliban strategy. Thoughts? http://bit.ly/cGYUME" and "Is Tom Ricks on target about the future of Iraq? http://ricks.foreignpolicy.com/" demonstrate Floyd's characteristic style and breadth of reading.

He'll start life post-Pentagon by teaching a class on public diplomacy at George Washington University and consulting for the Center for a New American Security, where he had worked previously.