"Please Don't Stalk Me" app allows you to mask your location when Tweeting.

Have you ever wished you could tweet from somewhere else in the world, without having to actually go there? The arctic circle? The great pyramids of Egypt? Or how about the Bermuda triangle? Well, now it seems like you can.

A little website entitled “Please Don’t Stalk Me”allows any Twitter user to alter the location data attached to their tweets. It’s the first time anyone from The Next Web team has seen a tool quite like this, and already we’re thinking of some pretty…interesting applications.
http://thenextweb.com/socialmedia/2012/09/10/tweet-anywhere-world-thanks-please-dont-stalk-me/