Seattle residents are losing patience with the city’s out-of-control homelessness problem. http://cityjourn.al/2HTLubE via @rufodoxpic.twitter.com/9It77InZE2
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 haven't seen any data on this, but I'd imagine it could be a contributing factor in some cases.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.