A dev friend just told me that even Macappstore requires 10.6+ to work now, so probably you are all updated already :)
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
A dev friend just told me that even Macappstore requires 10.6+ to work now, so probably you are all updated already :)