Go read @eszter on the Facebook filter bubble study. She's so so right on the sampling frame. http://crookedtimber.org/2015/05/07/why-doesnt-science-publish-important-methods-info-prominently/ …pic.twitter.com/utAfbtlUJZ
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
@deaneckles @eszter Also ignoring this confounding factor throughout. Yes the info there (especially in appendix) but buried and distorted.