So "FOUO"  = "For Official Use Only". Here is a link to detailed explanation of the term, turns out its a document classification, not a security level. That link in part defines it as:

"This designation is used by Department of Defense and a number of other federal agencies to identify information or material which, although unclassified, may not be appropriate for public release."

The interesting part is the one where I see a story come across Twitter about something that is not only in my professional area but a personal one as well. I click on the link (no, I'm not providing it here) and I go to a story on the Website of a widely-known tech magazine. There on the story page is an image that clearly has "FOUO" stamped on it. 

I think that policy is pretty clear here. I don't think I can link to or use that image. We found out when Wikileaks hit, that just because something is now publically available, doesn't mean that its classification has changed - so this image is public but still FOUO. As a govt. employee, I think my options are clear - don't link to it or use it. I just find this really interesting - kinda doing some mental disection on what this feels like. 

What would you do if you saw come across Twitter that was really juicy but contained proprietary information about or from your company? Would you RT it?