http://www.google.com/ads/preferences
You will see such amazing information about yourself - about you, as the advertisers see you... It might make you understand why you see wierd banner ads that you didn't expect. For me, I saw this information:
So far, so good, those are all interests of mine... Now it goes off the rails:Your categories
Below you can review a summary of the interests and inferred demographics that Google has associated with your cookie. You can remove or edit your categories at any time.
Arts & Entertainment - Music & Audio - Music Equipment & Technology
Finance - Investing - Commodities & Futures Trading
News - Business News - Financial Markets
OMG! Google thinks I'm 65+ WTF!!!! I'm actually almost 30 years younger than that, but that's kinda cool...Your demographics
We infer your age and gender based on the websites you've visited. You can remove or edit these at any time.
Age: 65+
Gender: Male
What does Google have wrong about you? Visit http://www.google.com/ads/preferences to find out...