Via Dennis, who calls this “One step closer to Nerdvana,” this video at Technology Review, which explains the new tool Zoetrope. Zoetrope allows a user to view how a webpage, or even part of a webpage, changes over time. According to the Technology Review article:
A user can peer back in time through Zoetrope in several ways. Simply pulling a scrollbar at the bottom of the browser winds a Web page back to show what it looked like hours, days, or months ago. Or, if the user is interested in one specific piece of information, like the price of a certain product, he or she can draw a “lens” over that area of the page to see how it changes.
An experienced user can perform even more-advanced analysis. For example, configured correctly, Zoetrope will recognize a price as it goes up or down and will show the results as a graph. It’s also possible to draw lenses on different websites and sync them in order to carry out a historical comparison. For example, a user could use one lens to track weather information and another lens to track movie-attendance figures. Looking at how both lenses change over time might reveal a correlation between bad weather and high movie turnout. Zoetrope can also track some pieces of data as they move about a page over time.
(I wish the Technology Review folks used a video service that allowed easily embedded videos. How pre-Web2.0!)