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	by Brian Fung 
	October 3, 2013
	from 
	WashintongPost Website
	
	 
	
	 
	
	 
	
		
			| 
			 
			Brian Fung covers technology 
			for The Washington Post, focusing on electronic privacy, national 
			security, digital politics and the Internet that binds it all 
			together. He was previously the technology correspondent for 
			National Journal and an associate editor at the Atlantic. His 
			writing has also appeared in Foreign Policy, Talking Points Memo, 
			the American Prospect and Nonprofit Quarterly.  | 
		
	
	
	
 
	
	 
	
	 
	
	
	
	 
	
	 
	
	
	When your browser landed on this article, it didn't just talk to the 
	friendly servers at washingtonpost.com.
	
	 
	
	It also made contact with Chartbeat, a company 
	that helps us understand where else you've been on the Web, and how you're 
	interacting with the site. Your browser also connected to a personalized 
	news applet called Trove, various marketing plug-ins and a social 
	bookmarking service run by a company known as AddThis.
	
	The same is true of the vast majority of sites you'll visit today. 
	Third-party trackers are watching practically everything you do online. Some 
	are innocuous in that they help enhance your Web experience. Others are 
	really annoying - things that you, as a consumer, probably wouldn't want 
	looking over your shoulder.
	
	To help you see which sites are sending your information to third parties, 
	the folks at Mozilla have designed a way to visualize these trackers. It's 
	called
	
	Lightbeam. (Unfortunately, the tool works 
	only on Mozilla's Firefox browser). 
	
	 
	
	When you launch it, it shows up blank - an empty 
	canvas waiting for your browsing history to turn it into a detailed online 
	portrait of you.
 
	
	
	
	
 
	
	
	From there, it quickly becomes something of a digital Jackson Pollock. Sites 
	you visit appear as a white circle. Associated plug-ins branch out from that 
	circle as white triangles. 
	
	 
	
	Here's what happens when you visit Nordstrom.com, 
	for instance:
 
	
	
	
	
 
	
	
	And here's what it looks like when you've visited more than a few sites:
 
	
	
	
	
	
	 
	
	
	In just the 10 sites that I visited over the course of that session you see 
	above, my browser made contact with over 100 third-party sites, some of 
	which had relationships with each other and were likely passing my data back 
	and forth.
	
	It's an engrossing visualization of a part of the Internet people rarely 
	see. 
	
	 
	
	There's a whole ecosystem of trackers that 
	latches on to you in the same way that wood-smoke or the smell of food can 
	give away where you've been in the physical world recently.
	
		
		"This is like the Wizard of Oz," says Alex 
		Fowler, who leads privacy and public policy for Mozilla. "We're pulling 
		back the curtain here, and this is how the machinery works. This is what 
		the inner workings of the Web really look like."
	
	
	So what can consumers do with this information?
	
	
	 
	
	Mozilla hopes they'll become more conscious of 
	the Web's underlying connective tissue. Beyond that, the company doesn't get 
	much into 
	specifics.
	 
	
	But Mozilla has also been active in promoting 
	Firefox's 
	Do Not Track function, which indicates 
	to Web sites when a user doesn't want to be tracked. Presumably Lightbeam 
	and DNT are meant to be complementary: 
	
		
		Once users realize the extent to which 
		they're being followed, they'll either switch on DNT (which doesn't, by 
		itself, end the tracking; only the retailer can make that call) or 
		better yet, become an advocate for a
		
		national Do-Not-Track policy, whose 
		prospects have been flagging of late.
	
	
	The likelihood that Mozilla could convert an 
	average consumer into an effective lobbyist this way - and wind up 
	succeeding in what's still an obscure policy fight - seems remote. 
	
	 
	
	Still, the organization has a great deal to gain 
	from describing, in easily understood visual terms, a previously abstruse 
	and impenetrable side of the Internet.