[ILUG] Advertising in GMail

[Kae Verens]

Sonic wrote:
>> Google can of course identify you through your cookies, unless you
>> disable them. 
> 
> As far as I am aware, only the domain which sets a cookie can read a cookie. So I'm assuming you are talking about the cookies set by Gmail itself. Am I wrong?

not quite true.

iirc, you can set cookies to be second-level-domain-wide, meaning that a 
cookie seet on blah.google.com is visible on foo.google.com

there are many other ways of doing it:
1.  an invisible <img> loading up the cookie-holding site, which informs said 
site what the parent's address is (something like <img 
src="http://foo.google.com/?parentAddr=http://blah.google.com" 
style="display:none" />)
2.  javascript...
3.  other ways...

-- 
Kae Verens
Senior Programmer for webworks.ie
work: http://webworks.ie/
blog: http://verens.com/
kfm:  http://kfm.verens.com/