If I run a website and I actually want to send all my data and as much of my users&#x27; data as I can possibly collect to, say, ten different vendors, then Segment looks great.<p>On the other hand, that means that I&#x27;m giving ten different vendors the ability to monetize all the data my site generates essentially for free.  This is great for them, kind of crappy for the users who get tracked and monetized, and terrible for me, because I&#x27;m not realizing the value I generate.<p>I&#x27;m frankly rather surprised that Condé Nast doesn&#x27;t try to <i>prevent</i> third-party tracking of its readers so that it can realize more of that value itself.  After all, why should an advertiser buy a high-value targeted add for display on a Condé Nast property when it can buy the same ad <i>with the same Condé Nast-dervied target</i> for much less on a site full of cat pictures?