Reddit is just a variation of a message board. But having said that I do think a social site within an organisation is a good idea.<p>We have social networks for businesses (Yammer), who wants to make Reddit-style sites for businesses with me? :P
The humorous thing is, the Pentagon doesn't need to build a knock off - Reddit is FOSS, available here:<p><a href="https://github.com/reddit/" rel="nofollow">https://github.com/reddit/</a>