Apple vs. Google ads: What are they selling? http://www.tipb.com/2011/05/04/apple-google-ads-selling/
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Apple vs. Google ads: What are they selling? http://www.tipb.com/2011/05/04/apple-google-ads-selling/