My best summary slide.pic.twitter.com/g21hm5dG1c
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
Are the slides online? 
Know of any tools that automate testing a rails based API for JSON API spec compliance? e.g tries to explore api and lint on weirdness.
Could you use JSON Schema for something like this?
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