One of the most fascinating elements of the Web 2.0 revolution is the scope and speed of innovation driving new developments on the Web. Witness the creation of new measurement and search tools related to tracking content on Twitter. This post by Brian Solis discusses the merit of Summize, one of several new monitoring tools. This one includes a “sentiment” tracker that breaks down the content according to positive or negative connotations – sort of like the typical “tone” tracking for news media content. I admit I’ve not been using Twitter much these days and have not used any of these monitoring tools, but based on what I’ve seen these should be added to the toolkit of all PR professionals involved in social media. Yet another example of the dynamic, creative environment on the Web.