Lexalytics has compiled over 1.1 Million words and phrases extracted from Wikipedia provide the first easy-to-use semantic classifier

Sentiment Text Analytics and Social Media gives companies the ability to know the temperature of what is being said online.

Here is the 411 on Sentiment Analysis and Sentiment Scoring

Sentiment scoring allows a computer to consistently rate the positive or negative assertions that are associated with a document or entity. The scoring of sentiment (sometimes referred to as tone) from a document is a problem that was originally raised in the context of marketing and business intelligence, where being able to measure the public’s reaction to a new marketing campaign (or a corporate scandal) can have a measurable financial impact on your business.