I'll weigh in on morgante's side here.
What WB discusses is a common misconception. Just because it doesn't appear to work for yourself, doesn't mean that targeting is not worthwhile. It's not really designed for an improved user experience, but to provide an advantage to those running the ad campaigns.
The crucial thing that people forget, is that that targeting only has to be a little bit better than random to be worth doing (from the ad operations perspective). Given a large number of ads shown every day, with nominal cost, we've only got to push a fraction of those toward users with a slightly better propensity to interact to increase the interaction rate, and get paid more from the advertiser (presuming a model where the advertiser pays us based upon interactions that we generate).
One of the reasons that it is profitable is that the amount we might get paid for an interaction could 50p, £1 or even £10 depending upon the client and media. The cost of showing that ad is a few pence per thousand! So, we can get it wrong many many times, and still show a statistically significant improvement in interaction rates and make a huge dent in profitability for ourselves.
I discuss all of this in Chapter 5 of Algorithms of the Intelligent Web. 2nd Ed. https://www.manning.com/books/algorithms-of-the-intelligent-...
What WB discusses is a common misconception. Just because it doesn't appear to work for yourself, doesn't mean that targeting is not worthwhile. It's not really designed for an improved user experience, but to provide an advantage to those running the ad campaigns.
The crucial thing that people forget, is that that targeting only has to be a little bit better than random to be worth doing (from the ad operations perspective). Given a large number of ads shown every day, with nominal cost, we've only got to push a fraction of those toward users with a slightly better propensity to interact to increase the interaction rate, and get paid more from the advertiser (presuming a model where the advertiser pays us based upon interactions that we generate).
One of the reasons that it is profitable is that the amount we might get paid for an interaction could 50p, £1 or even £10 depending upon the client and media. The cost of showing that ad is a few pence per thousand! So, we can get it wrong many many times, and still show a statistically significant improvement in interaction rates and make a huge dent in profitability for ourselves.
I discuss all of this in Chapter 5 of Algorithms of the Intelligent Web. 2nd Ed. https://www.manning.com/books/algorithms-of-the-intelligent-...