April 18, 2013, 5:34 PM — About a week ago I wrote a piece asking why RapLeaf, a data mining company with a controversial history, had failed to remove my personal profile from its database, despite my strong recollection of having opted out some two years ago.
With some help from RapLeaf, I finally figured out what happened: I did in fact opt out two years ago, but I did so using a different email address than the one attached to the profile I found last week.
First: Apologies to RapLeaf for implying that it does not honor opt out requests, which is a fairly serious charge for a data mining company these days. My bad. Tell the FTC to call off the hounds.
Second: This is a classic example of why opt out as a form of privacy protection is almost totally useless.
Now RapLeaf operates a little differently than most data mining companies on the Internet. It actually ties your identity, via your email address, to your data. So when you opt out of RapLeaf’s database, you do it across all devices and browsers at once.
Of course, if you’re a geek like me and have several working email addresses, you need to opt out of all of those addresses if you really don’t want RapLeaf building a profile of you.
That sounds bad, but it’s actually far better than how most Web tracking/data mining companies operate. They collect data anonymously (or pseudonymously), using browser cookies to identify you. That means if you want to opt out of being tracked, you have to do it for every browser on every device you use. Again, if you’re a geek like me, that means three or four browsers on my desktop and laptop, as well as browsers on my tablet and phone. And of course, whenever you get a new device, you have to do it all over again.
Wait, it gets worse. The Network Advertising Initiative offers a global opt out for 86 of its members. Check a box, click Opt Out, and you’re done. The Digital Advertising Alliance has its own opt out page listing some 480-odd tracking companies. But when you select global Opt Out there, it only works for 210 of them. If you want to opt out of the other 270 companies, you have to visit each of their Web sites, one at a time, and find the opt out link (if there is one).
And then do it for every single browser, on every device you own.