If you could test for Alzheimer's, would you want to? http://blogs.telegraph.co.uk/news/tomchiversscience/100262914/if-you-could-test-for-alzheimers-would-you-want-to-know/ … in which I start by completely undermining my whole premise
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