> Are you telling me and to the HN audience that you don't use the data "that every browser sends to every server", analyze it, try to get unique users out of it, try to gather interest, browsing behavior, a lot of other stuff and sell it to advertisers?

That's pretty much the definition of "cookieless tracking", isn't it? Feel free to read my original post.

This is spelled out quite clearly here: https://www.facebook.com/help/?faq=186325668085084