Radian6 social media monitoring solution

http://www.radian6.com/cms/home

From their site: The impact of social media on public relations and advertising is fundamentally changing the profession. Brand ownership is no longer solely the domain of the institution. A brand is now defined as the sum of all conversations taking place amongst users and it's happening regardless of whether you are part of these conversations or not.

Radian6 is focused on building the complete monitoring and analysis solution for PR and advertising professionals so they can be the experts in social media.