Google Social Search
Google is moving into the Social Search space as well. First there was the launch in Google Labs of Google Social Search:
Then there was the recent announcement at the Google Search Event that Google will be partnering with Facebook and MySpace (in addition to Twitter) to accept real-time feeds from these applications.
Google is certainly making rapid moves of late to integrate both the real-time web and the social web into its products. It will be interesting to watch moving forward.