HAYCORN — 6 December 2005

How much are you worth to Google?

Google has enough in­for­ma­tion to work this out: via the Gmail cookie they can es­tab­lish iden­tity in a way that per­sists over time and web client. From there, they can figure out what ads I have clicked on. (And of course they know how much this click is worth to them.) They also know what searches I perform and how frequently, and so can take a guess as to how much Google is worth to me. (They may even know the value of my content to them (via Google Analytics), though the analy­sis prob­a­bly gets a little tricky here.)

Do they do work out this figure? How much could they profit from it?