My guess is the reason OAuth 2 exists is that Bret Taylor didn't want to implement OAuth 1, and had a "better" idea how it should work.
@eranhammer -- thanks for explaining. I've RT'd your reply to all my followers to set it straight.
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
@eranhammer -- thanks for explaining. I've RT'd your reply to all my followers to set it straight.