Worse yet, "web browsing habits" is just one neck of the hydra. What you buy (when, as mentioned) serves as strong signal for any number of factors; all your conventional demographics of course...

I'm not in the industry but I am very curious to know if we're already in the conditional-execution phase of surveillance/ad-serving/profile-updating: is there an idea [yet] of serving a challenge, and then both recording how/if it is engaged, with automated graph traversal to "look closer"... all offered stochastically...

The simple way to put that in part is, are we now getting A/B tests run on us explicitly, rather than merely implicitly?

(Personally, I'm 100% off Meta products and TikTok—but am leaking through LinkedIn and, regrettably, Google...)