twendz is a Twitter mining Web application that utilizes the power of Twitter Search, highlighting conversation themes and sentiment of the tweets that talk about topics you are interested in. As the conversation changes, so does twendz by evaluating up to 70 tweets at a time. When new tweets are posted, they are dynamically updated, minute by minute.

twendz is a glimpse into what's on people's minds and their emotional reaction. Mining Twitter conversations alerts you to brewing trends, conversation topics and points of view. twendz uses a keyword-based approach to score tweets. Meaningful words in each tweet are compared against a "dictionary" of thousands of words that are associated with positive or negative sentiment; each word receives a score that, when combined with the other scored words, allows twendz to make an educated guess at the overall tone of a tweet. After twendz scores a handful of tweets matching certain criteria, it extracts key terms, assigns a tone rating to each of those, and assembles them in a word cloud.

For more information: http://twendz.waggeneredstrom.com/about-twendz.aspx