Yep, totally useful if that's what you wanted. But like I mentioned in the article, I didn't want to turn off all re-targeting since some of those ads are relevant. Also to change your "preferences" you need a Google account, I have 100 of those :) I also don't want to manage categories of ads, I just didn't want to see specific vendors.

I checked that link, and Google's profile of me is way off. Earth Sciences? Seriously? This is a comfort, since I figure letting the system run on bad information is just fine. It does suggest that Google isn't using some information it has on me. I'm sure it knows my birth year, but my browsing habits seem to suggest someone much younger. I must be 'immature.'

It put my inferred age as 65+ years old, when I'm 29. I'm not sure what to make of that, other than google is much worse at this than I thought they were ^^

Er, mine says I currently do not have an 'id' cookie. What's that mean? Am I untouchable or completely exposed?

Well, they've got me sussed. With unsettling accuracy.