zaphod2016
Graduate Poster
- Joined
- Jun 23, 2008
- Messages
- 1,039
"also collects information about you from other sources such as newspapers and IM services. This information is gathered regardless of your use of the web site"
I'd like to know how they do that, especially technically. So facebook "knows" who I IM on AOL/MSN/etc or what sites I go to from google reader even though the two are compeltely seperate? That's pretty amazing!
Many blogs/sites now use the "login via Facebook" feature, by which Facebook's API authorizes a remote login, passes your photo and profile info to the site in question, and takes note of which site you are logging in from. This allows Facebook to "watch" certain activity on 3rd-party sites. Also, if I develop a "Facebook App", and you authorize and "install" it, Facebook will pass me your profile data, and I can also get (limited) info on your friend's profiles per recent changes to the FB TOS. Technically both work the same; a 3rd-party site passes you to Facebook where you login (and activity is tracked), and then Facebook passes you back to the 3rd-party site (or loads it in an iframe/FBML).
The same is true of websites serving Google AdSense. When the javascript loads, an ad is served from Google, and Google takes note of the site you are on. Ads are served based on the keywords found in the page serving ads, and also based on your "personality profile" which is determined by your browser habits (determined anytime you use any Google services or access any 3rd-party sites using Google services such as "AdSense" or "Analytics"). Google Analytics takes all sorts of data, including time spent, keywords searched for, and info about your PC and browser.
Google and Facebook are just two examples; just about any service that offers an "embed" code does the same thing (ads, YouTube, login credentials, API calls, etc etc etc). See for yourself:
Click the "I agree" button, and watch your browser's status bar. It will say something like "transferring data from xyz.youtube.com"- as the video loads, YouTube is also seeing the URL of this thread right here, at which point they could spider it and check for keyword density. They would thus "know" you like JREF, and "know" that JREF dealt with concepts X, Y & Z. If you went to YouTube later, it might suggest an Alex Jones video, or an ad for gold.
This information could be abused, however, most rational people agree that Google's (et all) motive is in targeting ads more efficiently, thus boosting ad revenues.
Google has also been working on "Real-Time Ambient-Audio Identification"; for example, say a dog barks in the background in your house- they might serve a dog food ad. However, at present, most webware which accesses you mic and/or camera relies on Flash to do so. You should see a "allow this app to access my mic & camera?" warning when loading any such app.
If you are especially paranoid, disable Flash and javascript, and use proxies. That will limit "them" to only server-side analytics (which is still a daunting amount of data).
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