What Marketers Think They Know About You and What They Really Do
mattydread23 writes "Data broker Acxiom did something a little unusual this week. It launched a service that lets you see the data they've collected on you. CITEworld writer Ron Miller checked it out, and found it to be mostly laughably inaccurate. Among the things they got wrong included his religion, his interests, and the number of kids he has. But worst? It pegged him as a Windows user."
Thought I'd look at my own data, but when they started asking for the last 4 digits of my SSN I decided I didn't care so much about what they knew about me...
They're not _really_ trying to figure out data about who you are because they don't really care. What they care about are what ads are most likely to affect you. That's a clustering problem not an identification problem. And if those clusters happen to have similarities to a well-defined, named demographic category that just helps humans talk about them.