With the Radian6 listening platform, you can monitor the social web. Find your brand on millions of blog posts, viral videos, reviews in forums, sharing of photos, twitter updates.
Scan millions of sites including blogs and comments, photos, videos, mainstream news, forums, and micromedia like Twitter and Friendfeed
Nice-looking customizable interface with reporting from entire social-sphere, that also includes web analytics. Partnered with Salesforce and build a strong CRM that is easily accessible to both agency and client.
Results are based off key words, does not offer much insight into text analysis or human language processing (sentiment).
$600 – $$$$/month depending on need