@Meaningness I got lucky on one of thesepic.twitter.com/J5lYcOs5Wh
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
I cited your webpage on lighting and Vitamin D last night. Surprised nobody's attacked this market niche yet.
With a commercial product, you mean? Yes… although there’s no evidence it works other than a handful of anecdotes
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.