On Sat, 10 Oct 2009 23:40:51 +1300
Came this utterance formulated by Michael to my mailbox:

> 
> Does anyone have any code / demonstrations showing how this is
> achieved?
> 

Gathering stats eh?

Think like an advertising cookie. There is a little bit of (usually
Javascript) code downloaded from the master advertising server on to
each sites page which updates the cookie, and reports browser info back
to the server.

You could visit a doubleclick site then read the client side Javascript
they use (if it is open source). You have to come up with your own
backend on the master site of course, but that just requires a method
for filing stats.



-- 
Michael

All shall be well, and all shall be well, and all manner of things shall
be well

 - Julian of Norwich 1342 - 1416

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