[dillondoyle]

Ah that makes a bit more sense thank you for that info.

The docs/images they use make it look like an array but I just read the origin trial info page and it says ocument.interestCohort() only returns cluster id and algo version id.

still though the point stands i think. even say 1 million people in one cohort id # (they use 'thousands' to describe) + ip + UA and it's pretty unique, until apple and others proxying everything as recent posts suggest. Add whatever 8 bits or however many privacy allowance entropy and it's probably very unique and trackable over time if you have say TTD scale.

totally! it's very very confusing and I don't understand some (ok maybe a lot lol) of the RTB/context/retarget proposals and multiple RTB stakeholders have submitted their own too and they all have really stupid confusing names. But that's what I gather that it's basically the same result. It feels like the only way to do similar retargeting, conversion tracking is to have one 'trusted' source who gets all the data