Have you tried Yammer in your agency? Yammer is like an inside-the-firewall version of Twitter, enabling you to create a members-only social network inside your agency – instantly and for free. It operates a lot like Twitter, but with some nice extras. You can create private groups, add RSS feeds and the update field isn’t limited to 140 characters, as in Twitter. If appropriate, you can also cross-link Twitter posts into Yammer.
At NIST, Bryan Klein started the network about 5 months ago. Since then, there’s been a slow but steady increase in new members. Not sure we’ve reached a tipping point yet, but there are a few folks who yammer news, links, ideas, and questions regularly.
If you’re using it inside of your agency, would love to hear how you’re using it and what you think so far.