In the past week, both Radian6 and Sentiment Metrics have announced lightweight clients for their social media analysis platforms. (I'm calling it a slim client because thin client means something else.) The new applications are for users who need to work with SMA platforms but who don't need access to all of their features. It's not hard to imagine how this might lead to slim clients tailored to different needs, since the starting point is a dashboard environment that's already built from widgets.
Take a look; two announcements in one week suggests the start of a trend. Call it "SaaS meets client-server." :-)
Radian6: Engagement Console
Sentiment Metrics: SM Live
Both applications run on Adobe Air, like the popular Twitter client, TweetDeck (note the visual similarity with the Radian6 client). The Radian6 Engagement Console arrives in April; SM Live is due at the end of March.