[Cailean]

I'm fascinated by these things... I understand how they tailor to page content - well, actually I thought I did till I noticed that the ads are tailored to the content of the posts themselves... (edit: just read the AdSense site - I get this bit now...)

What I don't get is how the ads (suddenly they're people!) know where I am... most of the links I get in the ads are for canadian businesses. So, IP or cookies...?

[StudioJ]

Yes I've noticed the same thing with Australian ads, I'd say it must be based on the IP address of the person, its rare to not get a response that has an Aussie link in it amazingly enough, normally we wouldn't warrant a response on the scale.

[dewy]

Yes your IP contains come location details and they show you ads from your location =)