Company Buzz Application from LinkedIn
http://www.linkedin.com/opensocialInstallation/preview?_ch_panel_id=1&_applicationId=1000

Every second thousands of people are sending out messages about topics and companies through twitter. Company Buzz lets you tap into this information flow to find relevant trends and comments about your company. Install the application and instantly see what people are saying. Features include: a) Customize: Modify the topics and add new ones to watch; b) Historical Data: See historical charts to track buzz over time; and c) Trends: Get the top words associated with your topic and quickly drill into see related tweets. This has been added to Business Intelligence Resources Subject Tracer™ Information Blog.