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WikiChanges is a web-based tool that exposes the revision history of Wikipedia articles using an interactive graphical timeline. See About for more information and a Greasemonkey script to embed timelines in the real Wikipedia.
Last 20 plots: Grover_Norquist, Paget's_disease_of_the_breast, Hillary_Rodham_Clinton, Barack_Obama, Markdown, Mean, Template, Alexandra_Kollontai, Harry_Potter, P3P, Tenor, Facebook, you, Bolognese_sauce, Super_Bowl, The_Bond, rammstein, zoom, Talk:Tunisian_Revolution, Academy_Award.
Plots being processed: narendra_modi, Godspeed_You!_Black_Emperor, Rick_Astley, Tour_de_France, enterprise_resource_planning, steve_fossett.