Track your reputation using SocailMention
Monitor What the Crowds are saying about you
Search results are aggregated from numerous popular social media sources, including Google blog search, Twitter, Delicious, FriendFeed, Flickr, Digg, YouTube etc. and remixed as a single stream of information. The data is fresh, which means you can track conversations as they are happening in real-time.
In addition to web-based search results, Social Mention also features email alerts and personalized RSS feeds for automatic and instant updates. They also provide
API Documentation
Social Mention provides a feed API for developers access search results in several different formats.
Feed API
The search query feed is read-only data and comes in several formats including RSS, JSON, and PHP. It offers a window into what’s going on across various social media sites – which you can use in news readers, blogs, or your own third-party applications.

List of acquisitions by Google
Google Latitude – See where your friends are in real time!