The very first article in the Wall Street Journal's year-long series on online user tracking places at least 23 "pieces of tracking technology" from at least 10 servers, as identified by the Ghostery browser plug-in.
"One of the fastest-growing businesses on the Internet, a Wall Street Journal investigation has found, is the business of spying on Internet users," the first installment reads. One of the servers whose code lives on the article page on WSJ.com is from Bizo, an ad targeting company whose pitch is: "Powered by bizographic data on over 85 million people, the Bizo platform enables marketers, agencies, publishers, and ad networks to understand the "bizographic" makeup of site visitors, and precisely target and engage business professionals online."
The author mentions that "the Journal also tested its own site, WSJ.com". Since she doesn't share what the study found on wsj.com specifically, I thought I would.