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web_monitoring.jpg
I have experienced a simple version of web monitoring myself: since simply checking out some office chairs at some obscure shopping website, almost every website I visit (including my own blog) is plastered with multiple Google Ads of that specific shop. After several weeks, the office chair issue is long vanished, but the ads still persist. Where can I opt out please?

What They Know [wsj.com] is an interactive graph by the Wall Street Journal, illustrating the degree to which the 50 most popular websites exposes visitors to monitoring (think cookies, beacons, Flash cookies and the like, which together reveal large parts of your past browsing patterns).

Each red slice at the top represents a unique website, like msn.com or photobucket.com. Each website tends to send hundreds of tracker files to third-party websites, such as Google, AOL, Yahoo, or Microsoft. Figure out yourself why Google (26 trackers) seems like an angel next to privacy-grabbing websites such as merriam-webster.com (131 trackers) or careerbuilder.com (118 trackers).

4 COMMENTS

I have had that advertising thing myself.
I got rid of the bugging ads by simply deleting the cookies in my browser.

Thu 05 Aug 2010 at 4:39 AM

If you don't like seeing advertisements you can always get the AdBlock extension for your browser.

Thu 05 Aug 2010 at 7:18 PM
JEV

2 Firefox add-ons tips: Ghostery blocks all tracker js (adsense, analytics,...). BetterPrivacy blocks/removes otherwise inaccessible flash cookies.

Thu 05 Aug 2010 at 8:38 PM
Matěj

I think its pretty scary when I receive a personal email followed by adverts tailored to the information in that email!

Fri 03 Sep 2010 at 4:11 AM
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