I recently covered Socialcast, a "Friendfeed for business," and liked it a lot. It takes emerging social interaction models that people are just now getting accustomed to and adapts them for business.
Here at TechCrunch50, the idea is also in evidence with Yammer, more of a "Twitter for business" than Socialcast, since it doesn't seem to be able to pull in external feeds the same way.
However, users can have threaded discussions, as they can on FriendFeed. Users can also use "hashtags" for tagging topics, and they can follow just those tags. Useful … Read more