\PlaceFramedImage{cookiesensus.jpg}{Cookies found on Washingtonpost.com} \PlaceFramedImage{tacoda.jpg}{Cookies sent by Tacodo.net} \AuthorStyle{Andrea Fiore} \licenseStyle{Creative Commons Attribution{}-NonCommercial{}-ShareAlike} \Eng{\Title{Cookiecensus} Although still largely perceived as a private activity, web surfing leaves persistent trails. While users browse and interact through the web, sites watch them read, write, chat and buy. Even on the basis of a few basic web publishing experiences one can conclude that most web servers record \quote{by default} their entire clickstream in persistent \quote{log} files. \quote{Web cookies} are sort of digital labels sent by websites to web browsers in order to assign them a unique identity and automatically recognize their users over several visits. Today, this technology, which was introduced with the first version of the Netscape browser in 1994, constitutes the de facto standard upon which a wide range of interactive functionalities are built that were not conceived by the early web protocol design. Think, for example, of user accounts and authentications, personalized content and layouts, e{}-commerce and shopping charts. While it has undeniably contributed to the development and the social spread of the new medium, web cookie technology is still to be considered as problematic. Especially the so{}-called \quote{third party cookies} issue -- a technological loophole enabling marketeers and advertisement firms to invisibly track users over large networks of syndicated websites -- has been the object of a serious controversy, involving a varied set of actors and stakeholders. Cookiecensus is a software prototype. A wannabe info tool for studying electronic surveillance in one of its natively digital environments. Its core functionality consists of mapping and analyzing third party's cookies distribution patterns within a given web, in order to identify its trackers and its network of syndicated sites. A further feature of the tool is the possibility to inspect the content of a web page in relation to its third party cookie sources. It is an attempt to deconstruct the perceived unity and consistency of web pages by making their underlying content assemblage and their related attention flows visible.}